Door Hole Drilling Kit for Wooden Doors: designed to paintings well with wood doors within the most common lock sizes for day to day use; Adjustable plastic instruction manual template matches 1-3/8-inch and 1-3/4 inch thick doorways and suits 2-3/8-inch and 2-3/4 inch backsetsProfessional Quality: the hole saw and arbor are product of durable carbon steel, coupled with a bolstered plastic guide template, which allows this door lock set up equipment to ensure long-lasting functionality even with common useEasy Lockset Installation: this adjustable instruction manual template permits for easy and correct drilling, and the snap-lock arm could be utilized to choose door widths and backsets; No worries installation in about a simple stepsNotice: this door lock installation package is like minded with wood doors only; Do not drill throughout the door solely on one side, you must drill bore hole midway on both sides of the door.Please note: the physical slightly shade distinction or difference, does not impact the use, please do not mind, thank you!Material: plasticcolour: redPackage Contents:1 x Door Lock Installation KitOnly the above kit content, other merchandise are usually not included.Note: Light reflection and diverse reveals could cause the color of the thing in the picture a little bit different from the genuine thing. The measurement allowed error is +/- 1-3cm.