When installing your bike rack onto the hitch receiver
★Please check the product dimension before purchase
Just Insert the Square Shank into the 2" receivers
Extender length: 7" or 9"
just simply insert the square shank into the 2-inch hitch receiver tube
TOPTOW 64122-93 Trailer Drop Hitch Tri Ball Mount with 4-inch Riser/Drop, 2" Receiver Box, 2-inch Solid Shank, 10,000lbs Capacity Hitch Locks When installing your bike rackAbout this item Please check the product dimension (i. e. drop, rise, extender length, shank size, receiver size, etc.) before purchase. RECEIVER SIZE: This trailer hitch extension riser has 2 Inch by 2 Inch industry standard receiver, fits for most 2 Inch shank of ball mounts, bike racks, cargo carriers and other hitch accessories. HITCH RISE OR DROP: This tow hitch has 4 inch drop or rise can be turned up or down to level the towing system