Fulfilled by our friends at TiGr LockTitanium u-lock. Strong, Lightweight, Simple. Bicycle SecurityTitanium U-LockLocking area ~8" X 4" (~203 x 102mm)Weight ~17oz/482gProven bicycle securityPush-button locking mechanismPVC coating on bow protects bike frame from scratchesHandmade in the USAReinforced Mounting ClipAttaches to bike frame via water bottle lugs (screws not included)Lock snaps in and out easilyRubber bumpers reduce rattleStainless steel bracket reduces flexion1.4 ounces (40g)