SH25 Cylinder Shims

These shims are used when you need to take a lock apart and you do not have the key. These shims are only effective if you can access the rear of the lock, as you can not insert them in the front. Simply insert the skit at the shear line from the rear and use a pick to find the break in between the top pin and bottom. Then insert the shim to the next pin and then use the pick again. It is very easy.