This group will also drill holes and counterbore parallel holes over long periods in abrasive material.
Designed to receive plug maker group 24.
The drill size is for a clearance drill only.
For use with drilling machines or routers.T.C.T.
1/4in Shank.
No.8 Woodscrew Size.
Drill Diameter. 3/16in.
Counterbore Size. 9.5mm.
Drill Length. 20mm.