16 Pcs Forstner Drill Bits Set 16-Piece Forstner Bit Set for Wood: Forstner Bit Cutting Diameter: 1/2", 3/4", 7/8", 15/16", 1", 1-1/16", 1-1/4", 1-5/16", 1-3/8", 1-1/2", 1-5/8", 1-3/4", 2", 2-1/2", 3". Use on bench drill, vertical drilling machine, hand held electric drill, impact drill, CNC carving machine and other drill press. Please check the Diameter Size you need to avoid ordering in mistake SAFETY: 's carbide forstner bits with anti-kickback design provides higher stability and less vibration. When using, it should be noted that the RPM≦16000. Pushing slowly can help you get a smoother and cleaner cut Durable: High-quality YG6X carbide inserts with precision-machined Tungsten Carbide are powder-coated for durability, bring you a clean and smooth experience,and the strong wear resistance makes the forstner bits able to withstand the test of time in heavy-duty use Widely used: The forstner drill bits allow easy smooth drilling and are suitable for wood, MDF, plywood, compact panels, acrylic and particleboard. Pls do not cut metal and non-wood materials like steel, iron, sand, etc Customer-Centric Service: We prioritize customer satisfaction and offer a reliable after-sales. If you encounter any issues or have questions regarding our products, please don't hesitate to contact us. Enjoy woodworking with confidence