At the risk of stating the obvious, you CAN use a KW1 Lishi on a Weiser lock. The depths are different (twice as many on Weiser), and the spacing is slightly off, but it works. It’s convenient when you have to remove the key cylinder for rekeying, and you don’t have a working key to turn it to the removal position after pulling outwards on the square shaft. If you read the 1/2 cuts on the Lishi, you can probably make an accurate key. (1=1, 1.5=2. 2.5=3, etc.)
