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- Drums with internal threaded bore for mounting on threaded shafts. Rubber expansion drums are ideal for motors, grinders, flex shafts & bench mandrels. The rubber expansion is controlled by tightening/loosening the hex nut.
| Thread Direction | Right-Hand |
| Thread Size | 1/2-20 |
| Drum Dia. | 3 in |
| Width | 3 in |
| Weight | 1.05 LB |
| EAN or UPC | 44861030028 |
