The K-EZR is designed to slide under a herculite door so you can service the cylinder without having to remove the door. Once placed under the door you can view the set-screw with its’ reflective surface, you then turn the sprocket, loosing the set-screw. With the sprocket design there is no need to disconnect from the set-screw which saves you time.

Interchangeable slotted and Allen head tips are provided.