Vogueing Tool Square Hole Saw, 4pcs Saw HSS Woodworking Drill Bits Set with Twist DIY Mortising Chisel Power Tools (6/8/9.5/12.7mm)

Material: Special steel, heat treatment, HRC48~50, high hardness, lengthened core, high concentricity. Hollow Mortising Chisel Bits are for making square mortises in one stroke and oblong mortises with each succeeding stroke. Use matters: Square hole drill is mainly used for woodworking aspects. Professional wood drill bit, suitable for construction, installation, renovation, decoration industry, etc. 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. Mortise and tenon square hole drilled by the terrible + outer sleeve in the middle of the combination., Manufacturer: Vogueing Tool