Carry up to three bicycles on road trips or camping guards with the three bike hitch mounted carrier. A locking hitch insert, which fits 1 1/4 and 2 inch receiver hitches is easy to operate and super secure for your bikes. Just attach it to your hitch, then use the tie-down cradle system to individually secure and protect your bikes. The carry arms accommodate a wide range of frame sizes and designs, so you can carry your kid-size mountain bike or adult road bike with equal confidence. Some bicycles without a standard top tube may require an adaptor bar for installation. Locking hitch insert fits either 1 1/4 inch or 2 inch receiver hitches Quick install hitch secures and tightens rack inside of receiver hitch; Includes 2 keys Arms fold out of the way when not in use and rack tilts back when needed Individual tie downs secure and protect bicycles Accommodates a wide range of bicycle frame designs; Black powder coated finish 's warranty does not cover items purchased through third-party sellers