Door Hole Drilling Kit for Wooden Doors: designed to work well with wood doors in the most common lock sizes for everyday use; Adjustable plastic guide template fits 1-3/8-inch and 1-3/4-inch thick doors and accommodates 2-3/8-inch and 2-3/4-inch backsets Professional Quality: the hole saw and arbor are made of durable carbon steel, paired with a reinforced plastic guide template, ensuring long-lasting performance even with frequent use Easy Lockset Installation: the adjustable guide template allows for easy and accurate drilling, and the snap-lock arm adjusts to fit various door widths and backsets; Simple installation in just a few steps Notice: this door lock installation kit is compatible with wooden doors only; Do not drill through the door from one side onlydrill halfway through from each side to complete the bore hole Color: Orange Material: Plastic + Metal Package Contents: 1 x Door Lock Installation Kit Note: The package includes only the items listed above; other products are not included Note: Light reflection and different display settings may cause slight color variations between the item and the image; actual color may vary slightly. Measurement error allowance is +/- 1-3 cm