This key is for LSDA Locks made by ESP Lock and is used for various file cabinet and desk office applications. Key will be precut and ready to work in the lock. A key blank is pictured to help with identification. Use the line drawing image of the keyway in this picture and compare it to the face of your lock. The grooving should match. If it does not match see the listing for YALE Locks with the same code number. It is a completely different key. The key you receive may look different. If you don't know which file cabinet key or desk key to order, let us help. On the lock where the keys enters or on the side of the lock, you should find a letter prefix (AB001), a letter suffix (210AB), both a prefix and suffix (C210AB), letter between numbers (2RR50), or just number with no letters (123). If it's worn down and hard to see, sometimes a magnifying glass will help. and flashlight. You could also place a piece of paper over the key number and then shade over it with a soft pencil.