Dormer B3341 0052181 expanding hand reamer, 5-flute, High Speed Steel (HSS), internal designation No. 1. Designed for precision hand reaming of through and blind holes, this reamer features an expanding design for adjustable sizing and extended tool life. Suitable for general-purpose applications in a range of materials.

Adjustable hand reamer with replaceable blades (B335) and a square drive, diameter range 9.0 - 10.0mm number 1 with an overall length of 115mm and long replaceable blades with 9mm 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.