230mm HSS Twist Drill Bits 6/8/10/12/14/16mm Metal Steel Center Drill For Wood Door Lock Reaming Woodworking Tools The woodworking center drill bit is made from durable and wear-resistant carbon structure steel. With a tooth pattern bit, it allows you to drill holes easily and quickly in hardwood or softwood. it is perfect for woodworking DIY, home, and building. Features: Carbon Steel Construction: Self-guiding dentate head makes drilling accurate, simple, fast, and easy in hardwood or softwood, carbon structure steel material makes it not easy to break, wear-resistant, and durable. Multiple Application: The sharp twist drill bit is perfect for wood, plastic, and aluminum. it is ideal for DIY, home, and general building/Engineering. the center drill bit features super Hardness, more wear resistance, and surface whole roasted. Universal: It is universal for different brands of drilling equipment like impact drill, hand drill, bench drill Specification: Material: Carbon Structural Steel Applications: Drilling in materials such as hardwood or softwood Length: 230mm Diameter: 6mm, 8mm, 10mm, 12mm, 14mm, 16mm Package Included: 6*230mm: 1piece*(6*230mm) 8*230mm: 1piece*(8*230mm) 10*230mm: 1piece*(10*230mm) 12*230mm: 1piece*(12*230mm) 14*230mm: 1piece*(14*230mm) 16*230mm: 1piece*(186*230mm) 6pieces: 1*(6*230mm), 1*(8*230mm), 1*(10*230mm), 1*(12*230mm), 1*(14*230mm), 1*(16*230mm) Note: 1.Because the drilling speed of the hand drill is too fast, please pay attention to the speed regulation when drilling. 2. Manual measurement, please allow 1~2mm error, thank you. 3. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Please allow a little color difference. 4. If you have any demand for more products, please contact us.