Champion XL86 bridge reamers have a hex shank that is the same size as
the socket you would need to drive the bolt you are reaming a hole for.
They have a left hand spiral flute with a right hand cut, and they are
made of quality High Speed Steel (HSS). Typically used in rotary impact
sockets, their high helix is faster and chips less than standard helix
in impact wrench applications. Heavy duty reaming allows for use of off
size, misshapen and misaligned holes.