Specification Brand : uxcell BulletPoint1 : Specifications: Drilling Dia.: 85mm; shank size: 9.5mm; total length: 78mm. Round shank, cemented carbide cutter and solid hardened steel body. BulletPoint2 : Applications: Can be used for drilling holes on wood and plastic products, furniture, door hinge. Used on cutting wood, plywood, solid wood boards, MDF, plastics, fiberglass etc. BulletPoint3 : Features: Tungsten carbide cutting tip with special heat treatment for sharp cutting edge, high hardness, non-burrs and durable use. Arc curve design head for easy chip-removal, more efficient perforation BulletPoint4 : How To Use: Suitable for bench drill, vertical drilling machine, CNC carving machine. Processing hardwood or other hard materials should be injected with water to improve the quality and accuracy of drilling, and extend the life of the hole opener. BulletPoint5 : Tips: Maximum speed: 1200rpm. Used on desktop (fixed) equipment, and can NOT be used on handheld power tools (such as hand drill or electric drill). Can not drill metal and non-ferrous metal. To avoid causing damage, be sure no nails or other metal objects in wood before drilling. The cutting edge and tip of the opener should be sharpened in time. ExternallyAssignedProductIdentifier1 : 702105937976 ExternallyAssignedProductIdentifier2 : 0702105937976 ExternallyAssignedProductIdentifier3 : 00702105937976 FinishType : Silver ItemName : uxcell Forstner Drill Bits 85mm, Tungsten Carbide Wood Hole Saw Auger Opener, Woodworking Hinge Hole Drilling Boring Bit Cutter Cutting Tool (Blue, Silver Tone) ItemPackageDimensions_Height : 8 centimeters ItemPackageDimensions_Length : 16 centimeters ItemPackageDimensions_Width : 15.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : forstner-bits Manufacturer : uxcell Material : Carbide ModelNumber : a14102400ux0347 NumberOfItems : 1 PartNumber : a14102400ux0347 ProductDescription : Precision ground for heavy use and easily resharpened, it can enlarge existing holes with ease and can bore any arc of a circle. Carbide tip is specially designed to pass through hole cleanly in end grain and thin stock, great for boring concealed hinges and door clocks. Should work with an electric drilling tool, which is not included here.