This is a pair of 010 drawer keys that are compatible with many popular point of sale cash register drawers which have a 010R and 010L on the face of the lock. Please note the hexagonal shape of the top of the key when comparing. If your original key has a round head with "WT", then this is not the correct key. Also, this is NOT compatible with locks that have "WT 010" on the lock face. The lock should have 010R or 010L where the key is inserted. Or, it will fit older locks with only "010" IF its an older M-S Cash Drawer brand drawer. Feel free to contact us with any compatibility questions prior to purchase.