Squareness of both V grooves to front and back sides: 197_in
Hold cylindrical workpieces for inspection and machining.
Two V-blocks per set.
Made of alloy steel.
Hardened to HRC60?2.
V groove on the top for large shafts.
V groove on the bottom for small shafts (except 6896-10).

3M 45190, Disc Pad Hub, 4-1/2 in 5/8-11 Internal, 7000045659
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit 
