Tapering flute form with a length of approx. 3×nominal ⌀. Very sturdy due to strong core and radius heel of flutes. Easy, peeling cut by spiral flutes; number of flutes varies according to the size.
Particularly useful for the installation of components; for reaming offset holes or enlarging rivet holes. Bridge reamers are used on pneumatic hand-held drills in boiler construction.
For suitable reducing adapters for tools with MT shanks see No. 343000-343530