Groz BBR-1/RTW/1-2/3-8/STD Ball Bearing (Rear End) – Spare for RTW/3-8/STD & RTW/1-2/STD

The Groz BBR-1/RTW/1-2/3-8/STD is a ball bearing (rear end), a spare part for Groz's RTW/3-8/STD and RTW/1-2/STD. Ball bearings let the tool's shaft turn smoothly by carrying the rotating load on a ring of hardened steel balls rather than a plain metal surface. Because it is sold on its own, only this part needs replacing when it wears out, rather than the whole assembly that houses it.