Features: Precise engineered woodworking hole cutter set with carbon tipped blade delivers 50mm drilling depth and ±0.1mm accuracy, eliminating positioning errors for flawlessly furniture joints and cabinetry installations. Choose between standard and depth limit model the former simplifies quick tasks while the latter ensures millimeter perfect control for professional woodworking projects. Ideal for cabinetmakers, and serious DIYers requiring reliability boring tools for furniture assembly, door hardware installation, or workshop prototyping. Effortlessly creates clean hole for cabinet knobs in homes renovations, precise dowel joints in woodcraft studios, or shelf pin placements during customs closet builds. With instantly centering compatibility, this portable carbon hole cutter set transfer seamlessly between job sites and home workshops while maintaining drilling consistency across softwoods and hardwoods. Specifications: Component: carbon Steel Storage Box Size:Approx.16.3x10.7cm/6.42x4.21inch Option Type: Hole Opener,Hole Opener with Depth Limit; Includes:15/20/25/30/35mm Size Features:Cutting depth up to 50mm, Suitable for a variety of wood diameters from 5mm to 30mm Usage scenarios: Home ,Professional woodworking,Furniture processing Package Includes: 1set/5pcs Woodworking Hole Opener note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color