6.4/ 8/ 9.5/12.7mm Square Hole Mortiser Drill Bit Mortising DIY Woodworking Tools

Package Included:
1 X 6.4mm Twist Drill
&1 X 8mm Twist Drill
&1 X 9.5mm Twist Drill
&1 X 12.7mm Twist Drill

Specification:
- Material: High-Speed Steel
- Product size: 6.4mm,8mm, 9.5mm,12.7mm (Option)
- Application: used for woodworking punching
- The whole heat treatment, HRC48-50, high hardness.
- Drilling core is lengthened, concentricity is high.
- Used with mortising chisel,if extend square hole manually, need to use electric drill,hammer and other tools.
-The dimension refers to the length of the square hole drilled by the square hole.
-The cylinder diameter of the clamped portion is 19mm/0.74inch.
-The square hole drilling core are more than 210mm, belong to longer drilling core.

Specifications of 6.4/ 8/ 9.5/12.7mm Square Hole Mortiser Drill Bit Mortising DIY Woodworking Tool

Package Included: 1 X 6.4mm Twist Drill *amp;1 X 8mm Twist Drill *amp;1 X 9.5mm Twist Drill *amp;1 X 12.7mm Twist Drill