Dormer B33413 0140819 expanding hand reamer, 6-flute, internal designation N13, made from High Speed Steel (HSS). Designed for precision hand reaming operations, this reamer provides accurate hole sizing and finishing in a variety of materials.

Adjustable hand reamer with replaceable blades (B335) and a square drive, diameter range 45.0 - 55.0mm number 13 with an overall length of 370mm and long replaceable blades with 20mm taper lead, according to DORMER standard for light duty sizing of uninterrupted holes, HSS with bright finish for machining free machining, plain carbon and alloy steel, grey and malleable cast-iron, wrought and cast aluminium and copper or copper alloys.