12 MM-B Dumont Collared Bushing for Keyway Broach
Model #: BRBM-B-12
- For use with DuMont B series broaches
Collared style. "A" bushings must be used to guide "A" broaches, etc. For example, a 3/8-A bushing is used to guide a BR-1/8-A to add a 1/8" keyway in a 3/8" hole. Metric size "B" broaches can only use metric size bushings (not inch!), but other series (A,C,D,E,F) do not have this restriction.