_x000D_ _x000D_ _x000D_ _x000D_ HSS Twist Drill Bits Woodworking Drill Tools Kit Set Square Auger Mortising Chisel Drill Set Square Hole Extended Saw 6.0mm~20mm _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Describe: _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Application:used for woodworking punching _x000D_ _x000D_ _x000D_ 1.This Mortising Chisel is great for drilling square holes in wood with a mortising machine or a mortising attachment. _x000D_ _x000D_ _x000D_ 2.Square hole drill can not be used on an electric drill, drill square holes need to fit a square hole drill drilling (mortise and tenon machine) to use. _x000D_ _x000D_ _x000D_ 3. Mortise and tenon square hole drilled by the terrible + outer sleeve in the middle of the combination. _x000D_ _x000D_ _x000D_ 4.Reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industries. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Specification _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Material: High-Speed Steel _x000D_ _x000D_ _x000D_ Product size:6mm, 6.4mm, 8mm, 9.5mm, 10mm, 11mm, 12mm, 12.5mm, 12.7mm, 14mm, 15mm, 16mm, 18mm, 19mm, 20mm (Optional) _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Package Included: _x000D_ _x000D_ _x000D_ 1 X Square Hole Drill _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_