Description: 16mm-65mm Forstner Woodworking Boring Wood Hole Saw Cutter Drill Bit. Hardened and tempered,carbon steel construction. Used for wood perforation,spherical door tip installation,drawer tip,plastic products,wood,plywood,etc.Trepanning more smooth,less noise. Sharp edge,high hardness,accurate positioning,high precision,smooth cutting,impact resistance,high toughness. Enable woodworkers to drill holes without passing through the material when a clean and precise bottom to a hole. Selection of high quality alloy blade,make  blade more sharp and durable,it's head adopt arc curve design,beneficial to chip removal, perforation is more efficient. Suitable for hand held electric drill,stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine. Specification: Material:HSS; Total length:80mm; Shank length:65mm; Shank diameter:7mm-10mm; Head length:15mm; Diameter:16mm/18mm/19mm/20mm/22mm/25mm/28mm/30mm/32mm/35mm/38mm/40mm/45mm/50mm/55mm/60mm/65mm; When excavating, please take good protective measures to prevent the wood chips from splashing and damaging your eyes.   Package Included: 1 Pc x Boring Drill Bit