SENRISE Square Hole Opener / Twist Drill Bit for Woodworking Punching High Speed Steel Silver Black Size 6.4mm-30mm

Specifications: Material: High-Speed Steel Square Hole Opener Size: 6mm 6.4mm 8mm 9.5mm 11mm 12.7mm 14mm 16mm 19mm 22mm Twist Drill Bit Size: 6mm 6.4mm 8mm 9.5mm 10mm 11mm 12.5mm 12.7mm 14mm 15mm 16mm 18mm 19mm 20mm 22mm 25mm 30mm Application: used for woodworking punching 1.This Mortising Chisel is great for drilling square holes in wood with a mortising machine or a mortising attachment. 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. 3. Mortise and tenon square hole drilled by the terrible + outer sleeve in the middle of the combination. 4.Reduce labor intensity of construction workers speed up the construction speed reduce construction costs for construction installation renovation decoration industries. Package Included: 1 X Square hole opener or 1 X Twist Drill Bit