Description: 【Product 】: Woodworking Square Hole Drill, Bearing Steel Woodworking Square Hole Opener, Square Tenon Drill, Square Eye Drill Punching Drill Bit Bracket. 【Material】: The square hole drill bit bracket is made of stainless steel casting, ensuring its robustness and durability for long term use. 【Accessories】: This Square Hole Drill Bit Adapter is suitable for both bench drills and hand drills with a clamp diameter between 38 to 55mm/1.5 to 2.2 inches. 【Versatile Bracket】: Designed for both bench drills and hand drills, this Square Hole Drill Fixing Bracket offers versatility in your woodworking projects. 【Easy Installation】: The Woodworking Positioning Drill is easy to install or remove according to your needs, allowing you to quickly set up or dismantle it yourself. Specification: Material: Stainless Steel Size Chart: Bracket size: 100x19x55mm/3.94inchx0.75inchx2.17inch Clamp diameter: 38-55mm/1.5-2.2inch Package Includes: 1 Square Hole Drill Fixed Bracket Note: Please allow slightly errors due to manual measurement and different monitors.