[DETAIL] [Feature]: 1. "X" shaped openings, drilling is not easy to slip. The unique step structure, a drill can drill a variety of sizes of the aperture. 2. You can deburring, chamfering, punching elliptical hole. Titanium coating, more wear and oxidation resistance, not rust. 3. Higher precision, more sharp, burr-free drilling. 4. Spiral groove chip removal performance higher. 5. The hardness of the workpiece below the use of 25 �� below, such PVC board, insulation board, wood, workpiece thickness 4mm. 6. Converts a 1/2-inch square drive into a 1/4-inch hex quick-load adapter for power tools. 7. Adapts pneumatic or powered impact wrenches into drill drivers or converts wrenches into bit drivers. 8. Holds any 1/4-inch hex shank bit securely for stable operation. [Note]: 1. When drilling, the speed is controlled well, and the drill is at a constant speed. This is a drill for slow drilling. 2. At the same time, the power of the machine must keep up, otherwise the drill bit will break. 3. When drilling holes, remember not to adjust the speed very quickly. 4. Do not use to drill holes in metal. [ATTRIBUTES] - Hign-concerned Chemical: None - Brand Name: NoEnName_Null - Origin: Mainland China - Hign-concerned Chemical: None - Brand Name: NoEnName_Null - Origin: Mainland China - Certification: None - DIY Supplies: Woodworking - Material: High Speed Steel - Type: Core Drill Bit - Use: Wood Drilling