Square drill set

Description:

This is great for drilling square holes in wood with a mortising machine specification.

Square hole drill can not be used in an electric drill, square hole drill needs 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 the labor intensity of construction workers, accelerate the construction speed, reduce construction costs for construction, installation, renovation, decoration industries.

Arc design, excellent sharpening durable.

Use matters: Square hole drill is mainly used for carpentry aspects.

Features:

Name: Square hole saw

Product Size: 1/4 inch (6.4mm), 5/16 inch (8mm), 3/8 inch (9.5mm), 1/2 inch (12.7mm)

Material: spring steel

Color: As the picture shows