This 4mm set-screw hub is nearly balanced and great for high-speed applications. The 10-32 cup point set-screw requires a 3/32 hex key. When tightened, it will indent the shaft that is passing through and create the necessary friction to keep a tight hold on the shaft.
| Bore | 4mm |
|---|---|
| Material | Aluminum |
| Weight | 0.27 oz (7.7g) |