Door Hole Drilling Kit for Wooden Doors: designed to paintings well with wood doorways in the commonest lock sizes for day to day use; Adjustable plastic guide template suits 1-3/8-inch and 1-3/4 inch thick doorways and fits 2-3/8-inch and 2-3/4 inch backsetsProfessional Quality: the opening noticed and arbor are product of sturdy carbon steel, coupled with a reinforced plastic handbook template, which permits this door lock installation equipment to ensure long-lasting functionality even with widespread useEasy Lockset Installation: this adjustable handbook template permits for easy and accurate drilling, and the snap-lock arm would be applied to select door widths and backsets; No worries set up in a few uncomplicated stepsNotice: this door lock set up kit is well suited with wood doorways only; Do not drill through the door only on one side, it's best to drill bore gap halfway on each side of the door.Please note: the physical barely coloration difference or difference, doesn't affect the use, please do not mind, thank you!Material: plasticcolour: redPackage Contents:1 x Door Lock Installation KitOnly the above kit content, different merchandise are not included.Note: Light mirrored image and varied reveals could cause the colour of the thing in the picture a bit of assorted from the real thing. The measurement allowed error is +/- 1-3cm.