Features: Achieve precise 90 degree chamfering with this 3 piece countersink tool set featuring high quality bearing steel construction and efficient internal chip removal for clean, professional grade result in metalworking and wood projects. Engineered with double grinding technology for exceptional concentricity and a standardized 6.35mm (1/4") hex shank, ensuring compatibility with most power tool and consistent performances across wood, aluminum, and PVC materials. Ideal for woodworkers, professional craftsmen, and DIY enthusiasts seeking reliable deburring solution for workshop projects or home renovations. Perfect for creating smooth brims on cabinets, furniture joints, or electrical insulation boards while maintaining a debris free workspaces through its optimized chip ejection system. This hex shank deburring tool combines industrial grade durability with user friendly design, offering effortlessly bit changes and extended service life even under frequent use in demanding workshop environments. Specifications: Material: Ball Bearing Steel Size: 46.8mm/1.84inches Short, 57.5mm/2.26inches Long Handle Diameter: 6.35mm Hexagonal Handle (1/4 Inch, Standard Hexagonal Handle) Small: 5/64-15/64 (1.98mm-5.95mm) or 5/46/-15/64 Medium Size: 1/8-11/32 (3.175mm-8.73mm) Large Size: 3/16-17/32 (4.76mm-13.5mm) Package Includes: 3Pcs 90 Degree Hexagonal Handle Inclined Hole Chamfer Tool note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.