One of the most affordable ways to carry any standard bike on the roof of your car. This mount carries one bike, includes locks, self adjusting jaws, and will mount directly to most crossbars. Features. Selfadjusting jaws automatically wrap around the downtube for precise frame hold. Large wheel trays hold your bike securely during transit. Lock included to secure the bike to the carrier. Mounts directly to most factory and aftermarket rack systems max.3.5 crossbar diameter. Fits bike frames up to 3 3/8 in diameter and tires up to 2.6 wideSpecifications. Weight 10.8 lbs