The master lock push keyaccessibility easy use padlock requires no twisting of the wrist to operate the lock easy to use and requires very little force to open the lock the 60mm flared lock body provides easy grip with 1 hand it has a 7mm thick hardened steel shackle with a 19mm vertical clearance with a special groove guide to assist with key insertion comes with 4 keys 2 with oversized flat key head covers