Item Description:Hollow Square Hole Saw Mortiser Chisel Drill Bit Woodworking ToolFeatureSquare hole drill cannot be used on an electric drill, drill square holes need to fit a squarehole drill drilling (mortise and tenon machine) to use.Mortise and tenonsquare hole drilled by the terrible outer sleeve in the middle of thecombination.Reduce labor intensityof construction workers, speed up the construction speed, reduceconstruction costs for construction, installation, renovation, decorationMaterial: high-speedsteel,Hardness: 56HRCClamping shankdiameter: 19mm (Round)Model: 6.4/10mm diameter slotted (frontsquare) Use matters:Square hole drill ismainly used for woodworking aspects.Various existing bits,can only process a circular hole, square hole can not be processed, tomachining square hole, must drill the hole or cutting machine processedcrudehole, then chisel madefrom artificial hand. The utility model in the hole drilled by the rotarybody, while the impact of the use of hammer impact force transmitted to theouterbody, the materialdifferentspecifications of the square hole drill, matching the appropriate power ofthe square hole machine, you can play a square hole to meet therequirements.Item Specification:DIY Supplies: WoodworkingType: Gun Drill Bitlength: Square Hole DrillUse: Wood Drillingis_customized: YesMaterial: High Speed Steel