The Trimax Premium Razor Adjustable Hitch Keyed Alike Lock Set offers complete security for your Trimax Razor RP Adjustable Hitch. The 5/8 diameter hitch pin secures the ball mount inside the trailer hitch receiver and the 1/2" diameter hitch pin secures the ball platform to the shank. Both locks use the same key so theres no rifling through your key ring each time you need to lock or unlock either pin. Pins are constructed of chrome-plated hardened steel which makes them durable and rust resistant. Knurled lock heads increase grip.•Designed for Trimax Razor RP Adjustable Hitches•Comes with 5/8 and 1/2" Hitch Pin Locks•5/8 Hitch Pin Lock â 3-1/2 Span•1/2 Hitch Pin Lock â 3-5/8 Span•Knurled Lock Heads for Increased Grip•Constructed of Chrome Plated Hardened Steel•4 Keys Included•Tested to 32, 000 Lbs. Includes 4 keyed alike keys Tested up to 32, 000 lbs. Knurled lock heads for grip