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 15908, Scotch-Brite Roloc High Strength Disc, HS-DR, 2714175, A/O, Very Fine, TR, 3 in, 7010309326, 100 per case
Insize 9501-1200, COATING THICKNESS GAGE, probe type Fe, 0~50mils, 6928640394355
3M 65491, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc, DUH5220TRI-10T, 5 IN x UH, 220, 7100202880, 10 per pack
Dynabrade 95674 1/4" Female Coupler
3M 50728, Hookit Purple+ Curved Adapter Set Multi Hole, 70 mm x 127 mm, 7000032209 