The Lishi tool is a combination picking, tensioning, and decoding tool all in one. The graduated lines on the side of the tool make pick tip placement as easy as it gets. Once a lock is opened, the Lishi tool can be used to quickly decode the bitting values of the key that would open the lock.
NOTE - Use of excessive picking force can damage these tools and/or render the decoding function inoperable.
This is an automotive Lishi variant and fits in the following: