21-1705 - 3M CARTRIDGE ROLL REGULAR 1/2 X 3/4" 240G BX/100
A practical method for finishing inside and blind holes.
Use with cartridge mandrels .
When the upper layer wears away, the layer beneath gets exposed to continue the smoothing process.
Max speed- 15,000 rpm
use cartridge roll mandrel. 21-2723
Item #: 21-1705
