Ahr/11/St Groz Adjustable Hand Reamer Set, H4 – H14, 11.9 – 38.1Mm

The Groz range of Adjustable Hand Reamers are extremely useful precision tools for any engineering or auto-repair shop.
Set comprises of diameters ranging from 11.9 – 38.1mm.
Suitable for use on ferrous or non ferrous metals.
The reamer blades are made from High Speed Steel, accurately hardened 60 – 64 HRC and relief ground.
Each adjustable reamer has a chamfer or lead on the front end of diameter 0.004” – 0.019” according to size, which helps to make a quick start in reaming operation.
Reamers expand by loosening one adjusting nut and tightening the other.
Cocentricity within : 30 microns.