1. Quality Materials: Ensure notch door security with this door lock installation kit. The hole saw and spindle made of carbon steel provide strength and durability while being wearresistant, making them safe and ecofriendly. 2. Meet Various Needs: Our door lock installation kit enhances installation efficiency with a valuable set of tools, including 1 Ushaped adjustable rail template, 1 drill bit with mandrel, and 2 hole saws (1 inch and 21/8 inch). The 50mm saw cutting depth ensures precise work. 3. Hassle Installation: Offers a simple and convenient way to install locks. The template enables quick and accurate drilling, while the spring locking arms provide stability. You can adjust the door width and lock edge for a fit. Removing the kit is just as easy, making installation a breeze. 4. Wide Compatibility: Our door lock installation kit fits both 23/8inch and 23/4inch backset sizes, making it suitable for wooden doors. It comes with a template designed for 13/8inch and 13/4inch thick doors, accommodating the most common lock sizes.