Description: Product Features: This Wood Door Hole Opener and Grooving Machine is a woodworking tool designed for quick installation of door locks. It's great for grooving wooden doors, offering precision, lightweight durability, and adjustable sliding slots with connecting screws.Adjustable Design: The tool features a linear ball slide rail for greater stability at larger angles. With its parallel rails and adjustable width buttons, you can ensure drill operations.Quality Material: Made from alloy material, the tungsten steel offers fast grooving speed with sharp edges resulting in beautiful groove shapes. Please note that this is a milling cutter and, not suitable for drilling holes to the bottom.User Friendly: The tungsten steel material is hard and will not wear out easily making it ideal for woodworking tasks. However, chipping or breaking may occur when used on metal or hardwood due to the nature of tungsten steel, this is normal and not a quality issue.Package Includes: The package includes 1x grooving machine, 1x triangular clamp connecting rod, 3x tungsten steel drill, 1x woodworking flat slot, 1x positioning block, 1x steel ruler (30mm), and 2x open end wrenches (12#/14#). Size Chart: 42cmx27cm/16.54inchx10.63inchdoor thickness compatibility ranging from 3.5cm-10cm/1.38inch-3.94inch Package Includes: 1Wood Door Opener Slotter Set Note: Please allow slightly errors 1-2cm differences due to manual measurement.