85mm Hinge Boring Forstner Drill Bit 10mm Hex Shank

1. Forstner Bit drill clean holes in soft and hard wood. 2. Two spurs and centering point to give the perfect solution to repeated clean and accurate hole cutting time after time. 3. The sharp center spur accurately locates the center of your hole. 4. Use to drill precise flat bottom holes with no chipping in any thickness of soft wood. 5. For drilling holes in any direction and making arched openings. For drilling partially overlapped flat bottom holes for easy mortising. 6. Should be use with power drilling machine here is not included. Specification: Cutting Diameter: 85mm / 3.35 inch Hex Shank Size: 10mm / 0.39 inch Shank Length: 27mm / 1.06 inch Total Length: 85mm / 3.35 inch Feeding Speed (suggested): 8-12M/Min Spindle Speed(suggested): 18000-24000RPM Tip Material: Tungsten Carbide Body Material: Carbon Steel Package Content: 1 x Forstner Bit Weight: 307g; Main Color: Gray Please Note: 1.When drilling holes forstner drill bit is made only in the clockwise direction not reversible and the speeds from low to high is a gradual process. 2.Please grind the tool nose and tips to avoid ageing and damage when breaking; or it will cause a steep decrease in accuracy and quality for drilling holes after tips break.