This receiver hitch adapter helps convert 1.25" Class I & II receivers to 2" receivers. The 4-1/4" rise / drop also helps carry a bike rack or cargo carrier off the road. Please check the dimension for clearance. This trailer hitch adapter converts 1.25 inch receiver to 2 inch receiver 4.25 inch drop or rise can be turned up or down to help extend your bike rack carrier or cargo carrier off the ground for more clearance 1-1/4" solid shank with max Capacity: 3,500 lbs, Tongue Weight 350 lbs, fits for Class I & II Receiver Hitches Anti-rattle nuts and bolts on the top receiver not only makes it more sturdy also helps to eliminate the noise, rattle, movement when mounting a bike rack, cargo carrier, ball mount and other hitch accessories We guarantee all the products are crafted according to the standard, and all of them are durable and trustable.