Installation of the Top Star Shim Screw is easy using the GRK Crown Bit system which combines the 6 points of contact star drive with the 4 point crown. The quick and easy system reduces labor and allows for hassle free adjustment to ensure plumb installation.
GRK bits are made from hardened steel
- Designed for use with GRK Top Star Screws
- Eliminates the need for shims
- Star Drive Recess for zero stripping
- Micro-Adjustments allow for plumb installation