This carefully curated Counter Sink Drill Bit Set is the ultimate kit for clean, professional timber frame assemblies, particularly when using GRK fasteners in floor joists: the right bits for seating structural screws properly in big wood.
Specifications:
- Contents: 1/4 x 12-in high speed steel drill bit with a 9-in flute, and a 3/4-in type X countersink cutter, 1 in overall, four-blade high speed steel
- Use: seating GRK fasteners in timber frame floor joists
- Made in: USA by W.L. Fuller; assembled by Shelter Institute