OnGuard Minpin Keyless Locking Qr 3Pc Simply lock bike with wheels attached so that it cannot be tipped more than 90 degrees; to unlock, tip bike past 90 degrees and open QR levers Security rating of 55 No tools required Hub Skewers work with 100mm front and 130mm road - 135mm mountain bike hubs Keyless anti-theft for front and rear wheels and seat post