1. Complete Set: This door lock installation kit includes 1 x Ushaped adjustable rail template, 1 x drill chuck with drill bit, and 2 x 1inch and 21/8inch hole saws, helping you install door locks easily and accurately. The 50 mm cutting depth also enhances your work efficiency. 2. Materials: Enhance your door's security with this door lock installation kit, featuring a durable hole saw and spindle made of carbon steel. Thanks to the wearresistant and ecofriendly materials, the kit is safe to use and environmentally friendly. 3. Wide Compatibility: The door lock installation kit can adapt to 23/8inch and 23/4inch backset. It is ideal for wooden doors and comes with a template that works on 13/8inch and 13/4inch thick doors, fitting the most commonly used lock sizes. 4. Easy Installation: Use the template in our kit for simple and precise drilling with springloaded locking arms. Easily adjust it to different door widths and latch edges, and enjoy the convenience of a quick removal process.