2" Class III/IV Bicycle Carrier Rack Hitch Extension Adapter Provides additional hitch clearance for bicycle carriers and bicycle racks weighing up to 225 lbs. Measures 11-3/4"L overall: 4-3/4" hitch-end 7" receiver-end with 8-1/4" between receiver holes For use with 2" Class III/IV bike racks only (will not work properly with any 1-1/4" sleeve adapter) Includes threaded pinch bolt, clevis pin, and a bike rack stabilizer bolt Heavy duty construction with a black powder-coat finish