5 sizes: 35mm, 40mm, 45mm, 50mm, 60mm. A variety of sizes to provide a choice. Premium Quality: Made of high carbon steel, wood drill bit hole is sharper, more durable, impact resistance, high toughness. smoother, less noise. Multi-function: Perfect for punching wood products, door mounted door ball point, drawer, plastic products, wood, plywood, etc. Applicable tools: This metal wood drill bit is compatible with hand drills, cordless drills and bench drills, motorized stand drill etc. Customer Service Guarantee : If you have any questions, do not hesitate to contact us by e-mail! Your satisfaction is our highest priority! Specification: Material: Carbon Steel Size: 35mm/40mm/45mm/50mm/ 60mm Package Included: 1x Forstner Drill Bit 35mm 1x Forstner Drill Bit 40mm 1x Forstner Drill Bit 1x Forstner bit 50mm 1x Forstner bit 60mm