Features: This door lock hole drilling delivers durability and precisions with carbon steel construction and adjustable lock template, ensuring for accurate drilling on various door type. Featuring reinforced plastic guide template and carbon steel hole drilling, the allows for easy adjustment of door width and setback, minimizing manual measurements for seamless lock installations. for both professional contractors and enthusiasts, this lock installation caters to users seeking efficient and errorfree door lock setups home or workshop environment. for drilling holes on wooden doors with thicknesses ranging from 1 3/8 to 1 3/4inches, it adapts to common lock size for quick installations in residential or commercial setting. With including snaping on lock arm guide and multiple hole drilling, this wood door drilling set streamlines process, reducing setupS time and enhancing overall productivity. Specifications: Materials: Steel, Plastic Size: Hole Opener: 50mm Drill Bit: 100mm Package Includes: 4Pcs Door Lock Hole drilling note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.