4-piece Set Of Chamfer Drilling Tools High-speed Steel Titanium-lated 0blique Hole Chamfer Drill Tool Set These countersink chamfer drilling tools are a good helper for tool lovers! -Internal chip removal, to debris from flying. -90°angle on the point for compatible with sharp and countersinking. -Titanium-plated HSS4241, strong and wear. -Suitable for cutting steel, wood, plastic and metal. MAIN FEATURES INTERNAL CHIP REMOVAL: The fluted tools help to evacuate chips up and out of the cut to reduce clogging. Make cutting faster, cleaner and quieter. Round shanks allow use with a wide variety of toolholding systems. SOLID AND DURABLE: Made of HSS4241, rustproof, solid and durable bit can cut smoothly without chatter and fluted edges. 90° angle on the point for compatible with sharp and countersinking, used for workpiece circular aperture chamfering or hole. CHAMFER RANGE: 2-5mm, 5-10mm, 10-15mm, 15-20mm; Shank diameter: 6mm, 8mm, 10mm, 12mm; diameter: 10mm, 14mm, 21mm, 28mm. WIDELY USED: Ideal for cutting plywood, wood, acrylic, PVC board, plastic and metal(hardness