This solid, high-strength steel, flush-style hitch lock lets you secure your ball mount, bike rack, cargo carrier or other accessory to your trailer hitch receiver 2-1/2" and larger. 5/8" Pin diameter.

Designed for 3" hitch receivers, this 5/8" diameter lock includes a standard flat key. Fits factory 3" hitches. Install the included 3/4" diameter adapter sleeve to use with a heavy-duty 3" Reese Super Titan hitch.

Designed for 3" hitch receivers, this 5/8" diameter lock includes a pick-proof square key. Fits factory 3" hitches. Install the included 3/4" diameter adapter sleeve to use with a heavy-duty 3" Reese Super Titan hitch.

Designed for Pro Series adjustable ball mounts (63070, 63071, and 63072) this set includes a 3/4" lock to replace the pin that holds the ball mount platform in place on the shank, and a 5/8" lock to secure the ball mount in a 2" hitch.