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 14215, Roloc Disc Pad TS and TSM, Medium 3 in 1/4-20 Internal, 7000119310
Dynabrade 15101 Tension Arm (for Mini Dynafile II)
3M 45095, Roloc Disc Pad TR, Medium 2 in 1/4-20 Internal, 7000045282
Dynabrade 95745 1/4" NPT Speed Regulator
Dynabrade 01185 Vane Set (4pk) 
