4Pcs Woodworking Square Hole Drill Bits Wood Mortising Chise

This Mortising Chisel is great for drilling square holes in wood with a mortising machine or a mortising attachment.
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.
Reduce labor intensity of construction workers, the construction speed, reduce construction costs for construction, installation, renovation, decoration industries.
Size: 1/4 inch (6.35mm), 5/16 inch (7.94mm), 3/8 inch (9.5mm), 1/2 inch (12.7mm) Material: high-speed steel
Hardness: HRC 48-50
Color: silver
Clamping diameter: 19mm (Round) Length: 210mm Package Contents:
4 x Drill Bit Only the above package content, other are not included.
Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.

Key Features

Durable and good quality
Woodworker Square Hole Drill Bits
Hole Drill Bits
Woodworking Sets
Mortising Chisel Power Tools
Twist Drill DIY
The details are as described above

What's In the Box

4 x Drill Bit