Rubber coated protection. Equipped with an anti skid rubber bumper for secure placement. Patent pending safety lock to keep the accessory locked. Installed in three different ways: screwed to a stud, fixed to a flat wall surface or attached to an easy installation hang rail. Limited warranty. Made from hardened steel and automotive grade plastics. Titanium finish. Capacity: 50 lbs.. 8.5 in. L x 3.25 in. W x 3.63 in. H. Assembly Instruction It has a universal design to allow it to be used for several different items so that as your needs change over time, you can continue to reuse this universal accessory. Common uses include storing mountain bikes, racing bikes, children"s bikes, push scooters and more.