Opens Master Lock Model #1, #2, #3 & #4 padlocks in seconds. Withdraws the locking teeth on most Model #5 and # 6 padlocks far enough to insert standard butterfly shims. Get right to the heart of Master Locks with our Silver Bullets! Training DVD highly recommended for use of these tools.
DOES work with the earlier versions with the Blue Master Lock molded band and those that said "tougher than a bullet" are the ones we beat.(and earlier).
Does not work on the later versions (commercial) with the black molded band.