9/16" Diameter locknut is designed for use with shackle bolt (sold separately).

Castle nut for 1" spindles. Bare metal finish.

Replacement washer is designed for use with 1" diameter spindles.

Castle nut locks in place on 7/8" diameter suspension bolt (sold separately) with a cotter pin (not included).

Self-adjusting driver's-side electric trailer brake assembly measures 12" x 2" and features a thoroughly tested magnet and high-quality friction material. Rated for up to 7,000-lb axles.

Self-adjusting passenger's-side electric trailer brake assembly measures 12" x 2" and features a thoroughly tested magnet and high-quality friction material. Rated for up to 7,000-lb axles.

Self-adjusting driver's-side electric trailer brake assembly measures 10" x 2-1/4" and features a thoroughly tested magnet and high-quality friction material. Rated for up to 3,500-lb axles.

Self-adjusting passenger's-side electric trailer brake assembly measures 10" x 2-1/4" and features a thoroughly tested magnet and high-quality friction material. Rated for up to 3,500-lb axles.