1.Complete Set: This door lock installation set includes 1 adjustable Ushaped rail model, 1 mandrel with drill and 2 pieces of 1 inch and 21/8 inch hole saw, with which you can easily and precisely install door locks. The cutting depth of SAW of 50 mm also improves your work efficiency. 2.Highquality materials: With this door lock installation set, you ensure the of the door perfectly. Hole saw and spindle made of carbon steel provide strength and durability and are also wearresistant, making them and environmentally friendly. 3.Wide range of applications: This door lock installation set ensures easy installation for 23/8 and 23/4 inch binders on wooden doors. The scope of delivery includes a model suitable for doors with a thickness of 13/8 and 13/4 inch and the most commonly used locking sizes, making it versatile. 4.Hassle installation: Provides an easy and convenient way to install locks. The model enables fast and precise drilling and the spring locking guarantees stability. For the perfect fit, you can ly choose the door width and the locking edge. Removing the set is also easy, so installation is a breeze.