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Round Swivel Marine Jack w/ Wheel - Bolt On - Zinc - Sidewind - 10" Travel - 1,000 lbs

Round Swivel Marine Jack w/ Wheel - Bolt On - Zinc - Sidewind - 10" Travel - 1,000 lbs

Item # MJ-1206B
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Shipping Weight: 15 lbs
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Corrosion-resistant, clear zinc swivel jack with 5-3/4" wheel is perfect for marine use as well as other recreational applications. Jack has an extended height of 23-1/2", a retracted height of 13-1/2", and a capacity of 1,000 lbs. Lowest Prices for the best trailer jack from etrailer. Round Swivel Marine Jack w/ Wheel - Bolt On - Zinc - Sidewind - 10" Travel - 1,000 lbs part number MJ-1206B can be ordered online at or call 1-800-496-5010 for expert service.
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  • Reviews (489)
  • Q & A (0)
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  • Why etrailer?

etrailer Trailer Jack - MJ-1206B

  • Boat Trailer Jack
  • Side Frame Mount Jack
  • 0 - 1000 lbs
  • Sidewind Jack
  • No Drop Leg
  • Bolt-On
  • Swivel Jack - Pull Pin
  • 10 Inch Lift
  • With Wheel
  • etrailer

Corrosion-resistant, clear zinc swivel jack with 5-3/4" wheel is perfect for marine use as well as other recreational applications. Jack has an extended height of 23-1/2", a retracted height of 13-1/2", and a capacity of 1,000 lbs.


  • Marine jack lets you raise and lower your boat or recreational trailer
  • Swivel design lets you swing jack up for storage, down for use
    • Single bolt-through design provides extra side-load support
    • Convenient 1/2", spring-loaded pull pin secures and releases jack
  • Plastic wheel lets you move your trailer
    • Inner tube rotates with wheel allowing you to move in any direction
  • Sidewind handle has comfortable, grooved grip
  • Corrosion-resistant clear zinc finish for durability
  • Bolt-on installation to the side of your trailer
    • Mounting bracket and hardware included


  • Application: trailers with a frame height from 2" to 4"
  • Bracket height (from bottom of wheel to center of bracket):
    • 13-1/2" Retracted
    • 23-1/2" Extended
  • Travel: 10"
  • Outer tube diameter: 2"
  • Inner tube diameter: 1-3/4"
  • Wheel dimensions: 5-3/4" diameter x 2" wide
  • Mounting bracket dimensions: 6-3/4" long x 5-3/4" wide
  • Handle radius: 7"
  • Lift capacity: 1,000 lbs
  • 1-Year warranty


MJ-1206B Ram Round Swivel Marine Jack - Bolt On - Zinc - Side Wind - 10" Travel - 1,000 lbs

Customer Reviews

Round Swivel Marine Jack w/ Wheel - Bolt On - Zinc - Sidewind - 10" Travel - 1,000 lbs - MJ-1206B

Average Customer Rating:  4.8 out of 5 stars   (489 Customer Reviews)

Corrosion-resistant, clear zinc swivel jack with 5-3/4" wheel is perfect for marine use as well as other recreational applications. Jack has an extended height of 23-1/2", a retracted height of 13-1/2", and a capacity of 1,000 lbs.


First let me say that Customer Service at etrailer is outstanding. The first jack I tried was recommended for my trailer by a tech but it did not fit my trailer. Customer Service was quick to help me out by authorizing the return and recommending the MJ-1206B jack which arrived in two days. The jack fit fine but there’s some “play” between the mounting bracket and the swivel bracket, and the jack stood slightly off vertical once the weight of the tongue was on it. Unlike a stationary jack there would need to be some amount of play between the brackets so that the jack can easily swivel up and down, which it does and it rolls easily as well. A previous review described a similar condition so it appeared the bolt and space between the two brackets was likely preset correctly although the reviewer said he was able to tighten the bolt somewhat, which I was unable to do. I called customer service and was told there would be some play between the brackets and the jack should operate fine. I need to move the trailer by hand each time I use it so it will get a good test of its durability. Again, customer service is excellent at etrailer!

My MJ-1206B trailer jack continues to function properly after a year of use and makes moving my trailer easy.
Al B - 03/31/2019




Jack works fine after I made a slight
mod to it. When change the position of the stand the level to hold the stand the the position you set, would slam in so tight, you needed a hammer to change it back. I took the level off and drilled a hold in the bend of the level and added a washer and cotter key. works great now. Friend of mine had the same problem, he just drilled the hole a little bigger. I tried to attach a couple picture to this email but not sure if it worked. If you didn't get them let me know and I will forward a email that I sent to myself that has them attached. hope you can understand what I'm trying to say. that's why only 3 stars.


A nice, heavy dolly jack. Quality seemed very good. Search as I did, I still came up short one 3/8-16 nut so had to go to the store to get one. I found the main bearing bolt to be very loose. When I attempted to tighten it up it came to what felt like the end of the threads on the bolt and still allowed a bit more slop than I would have liked in the retracted/stowed position. I expect it will rattle in transit but probably get swamped out by all the racket usually associated with the ball/receiver connection.

Ive used this retractable dolly for over a year now and it is functioning well. Definitely performing as intended.
John C - 01/12/2021


Jack works well as intended after I tightened the nut on the main swivel bolt to stop it from leaning. Bottom caster wheel is very helpful moving the trailer without having to lift the tongue.


I received trailer tongue jack MJ-1206B, and installed it on my new light-duty boat trailer loaded with my 300-lb partially completed boat, but the jack is not yet in full service. There were no instructions included with the delivered package. The online video was helpful, but not a satisfactory replacement for the lack of good written instructions. Thus it is unclear how to lubricate the internal mechanical assembly, and it is unclear whether the main pivot bolt can be/should be tightened to reduce lateral wobble in the loaded jack. Without instructions, some users may have trouble figuring out which of the several provided installation holes to use (at least one user did have this outcome).

In addition, during maneuvering of the trailer on my garage floor, I noticed the wheel was severely dragging, and upon examination I found plastic shavings on the floor. This was the result of the wheel sliding laterally along the pivot bolt (to the outside of the turn) and forcefully contacting the sharp corner of the wheel bracket, which then acted as a “shaver” on the edge of the wheel. The fix is simple: I’ll install spacer washers to prevent the wheel’s sliding, but the manufacturer should have provided such spacers. Due to this defect and the lack of instructions, I am rating this product with 3 stars.

The above fix installation of spacer washers on axle worked. After one year since purchase, the tongue jack has been performing well, without problems. The use has been only occasional since the trailered boat has just now been completed. Tongue weight is light, at about 75 lbs.
Ralph - 04/25/2021


It's great to have a heavy duty Jack that makes moving my loaded utility trailer easy to move about. The purchase process was straight forward and smooth. Customer service at etrailer was great, too. The Jack easily mounted and works great.


Bought as a replacement for a broken one on a boat trailer about a year ago. No issues at all so far. Works as it should.


It was more heavy duty than expected.

Works great.
Leonard B - 11/05/2021


Good jack for the money


just what I needed

its great no problems glad I purchased the jack
Jimmy - 02/01/2022


Well built and looks good. Trouble is it doesn't drop the tongue down far enough to reach my trailer hitch. No adjustment for that as far as I can see.


Picked up this jack when the factory unit stripped its gear. I love the extended range of travel that allows it to hook onto our highlander without manually lifting up on the trailer tongue. Installation was easy and it was worked flawlessly.




Easy as one two three, had to buy shorter bolts but that was no big deal.


Needed a replacement jack for my boat trailer. Although I have ordered from etrailer before and have always found the quality to be very good, I was not expecting much for the price of this jack. Was very surprised when the jack arrived. Very well built! Solid construction. I expect this will be the last jack I need.

Everything has been good. All the products that I have purchased from you guys are holding up great.
Tony P - 08/27/2018


Received the Jack quickly, was as described in the ad. Installation took 15 minutes and it works great!!

Installed on aluminum frame Legend Enclosed trailer.

Jack has held up well, works very good.
Kurt H - 04/26/2018


Great trailer jack for the price. Sidewind handle is comfortable to grip and it spins very smoothly with little to no gear noise. The double bushing on the crank are a nice feature not found on many jacks in this price range. Easy installation on my PWC trailer. I have no complaints. Thanks again for a great product.


Just installed yesterday. Works good. Time will tell. The last tongue jack I bought for my boat trailer seized in 2 years. Saltwater is tough but I expect to get a little more life out of it.


The trailer jack was exactly as advertised and easy to install. The order arrived the day that my confirmation said that it would. An overall excellent experience.


I bought the trailer jack to replace an old broken one. The jack came as expected and was easy to mount. I like that it only took 4 bolts to install. The bolts that came with the jack were a little too long fore my application but I was able to replace them with shorter bolts, an easy fix.

The jack works great, the handle is easy to turn and I can raise and lower my trailer with little effort. The wheel pivots and rotates freely making it easy to move and maneuver my trailer when it's not hitched to my vehicle. When the trailer is not hitched to my vehicle the jack locks into the down position using a spring loaded pin. When the trailer is hitched the jack simply rotates out of the way just by pulling the spring loaded pin and locks into the up position for travel.

Definitely happy with the trailer jack and always happy with



Thank You Tim,I just got it and i"ll put it on this morning.
Great service from etrailer.I have done business in the past and i will continue to do business with you in the future.


Not as easy to install as it could be. Use blocking to hold it steady. Nyloc nuts are great but in this case required lots of ratcheting as bolts were much longer than needed for my trailer. Regular nuts with lock washers would be easier. Also large nut and bolt attaching jack to plate was very loose. We discovered this after we had mounted to trailer. Took a bit of work to get it tightened. Check before mounting. When finished works great for moving our light utility trailer around by hand.


I just installed the product yesterday, so my review is limited. It is well-built and operates smoothly. The only issue I have is that the bolts were too long. I Purchased metric 10 mm bolts which fit the holes better (tighter fit, less play). Very Happy with the product and etrailer over all

It’s been great, performs like new despite a heavy tongue frequently draggedpushed dirt and gravel. No negative issues
David - 07/15/2019


My 14yr Shelby stopped turning and I ordered this product immediately and it came in two days. Saved me from dangerously using a jack to put the boar on. I have a single mount on my trailer there is already a bolt welded to trailer for attachment so this clamp would not work on my existing site. i was able to grind the hole slightly larger slide over the bolt and fitting to fit on my trailer. The jack works great. Thank you etrailer for the rescue

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