About This 【Versatile Countersink Drill Bit Set】 : This 5-piece countersink drill bit set includes sizes 1/4”, 3/8”, 1/2”, 5/8”, and 3/4” with an 82-degree angle, ideal for wood, metal, plastic, and other materials. 【Clean and Accurate Countersinking Drill Bits 】: Each countersink bit features 5 sharp flutes and a precise angle for fast, smooth screw recessing in all types of workpieces. 【Quick-Change Shank】 : This countersink drill bit set features a 1/4" hex shank for quick drill changes—compatible with handheld drills, impact drivers, and drill presses. 【Organized Storage Case】 : This countersink drill bit set comes in a compact storage case to keep your countersink bits protected and organized for easy transport and long-term use. 【Built to Last】 : This countersink drill bit set offers excellent hardness and heat resistance for long-lasting performance; oil after each use. PLEASE DO NOT USE for Processing STAINLESS STEEL or IRON PLATES. Overview Material : Alloy Steel Cutting Diameter : 0.75 Inches Shank Type : Hex Shank Cutting Angle String : 82 Degrees Brand : Okomagix