Insize 6889-5, MAGNETIC V-BLOCKS, 6.3_4.9_5.1?, pair, 6940561937091

Matched pair.
Hardened, high accuracy, strong magnetic force, for grinding, light milling, drilling and inspection of round and square jobs.
All working surfaces are hardened to HRC60?2.
Magnetic force on top, bottom and two V grooves.
V groove on the top for large shafts.
V groove on the bottom for small shafts.
Suitable for cast iron surface plates and granite surface plates.