GRK Fasteners 20161 3/8” x 3-1/8” Top Star™ Adjustable Shim Screws
Top Star™ Adjustable Shim Screws is a screw within a screw that has a quick and easy system to reduce labor and allows for hassle free adjustments to ensure plumb installations.
Features
- Star Drive eliminates stripping for improved productivity
- 4-point 3/8" diameter threaded sleeve provides a secure hold in your wooden frame
- Micro-Adjustments allow for an absolutely plumb installation
- Use with GRK's Top Star Crown and T-15 Star bit system