Drill Bit Woodworking Tools Durable Mobile Smartphone Accessories

Description:

- Professional woodworking drill bit, square cutter

- High speed steel material, high hardness, lengthened core

- use with mortise and tenon machine

- The square hole punching needs to use electric drill, hammer and other tools

- For construction, installation, renovation, decoration, etc.

Specification:

- Material: High Speed Steel

- Hardness: HRC48-50

- Clamping shank diameter (cylinder): Approx. 19mm/ 0.75 inch

- Drilled core length: Approx. 210mm/ 8.27 inch

- Center drill bit diameter (the square hole side length):

- Approx. 12.7mm (1/2")

- Approx. 9.5mm (3/8")

- Approx. 7.94mm (5/16")

- Approx. 6.35mm (1/4")

- (as you choose)

Package Includes: 1 Piece of Square with Drilled Core