had 11 pad locks on 5 keys it was a jumble to figure out what key fit which lock so i color coded it. this was designed to fit Brinks 40mm padlock and key. may fit other brands but no promises. there is a cut for the shackle swing but barely shows up might show up better standing on end. padlocks and keys are stamped and vary in size. this fit some locks tightly on some loose on others the same with the keys.