Spins 10 Foot Lengths Together in Under 10 Seconds with Less Chance of Injury. When shaft turns, grips expand to lock on inside of conduit and spin it 360° to join the entire 10 foot length into the preceding coupling. Drill can be reversed to disconnect conduit. Eliminates labor intensive ropes or chain and heavy hard to handle strap wrenches. Spinners available in sets at reduced prices or sold separately.