Machining method: cylindrical lapping.
Ra: 1, 2, 4, 8_in. Rz: 18, 22, 25, 49_in. Quantity 4pcs; superfinishing. Ra: 1, 2, 4, 8_in. Rz: 14, 28, 40, 56_in. Quantity 4pcs.
For checking, identifying and specifying the roughness by symbol.
Rust-proof, made of pure Nickel.

Dynabrade 54972 Vane Set (5pk)
3M 52755, Cool Flow Exhalation Valve 7583, System Component, 7000002159, 10 ea/Bag
3M 14215, Roloc Disc Pad TS and TSM, Medium 3 in 1/4-20 Internal, 7000119310
Air Turbine Tools 310RXSV - 6mm Router Hand Tool Series with Brake, 30,000RPM, 43435
3M 26000, PPS Series 2.0 Spray Cup System Kit, Standard (22 fl oz, 650
mL), 200 Micron Filter, 7100134641
3M 02016, Wetordry Paper Sheet 431Q, 120 C-weight, 9 in x 11 in, 7000118314
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
Dynabrade 01011 Vane Set (4pk)
3M 12954, Scotch-Brite Roloc Surface Conditioning Disc, TR, 4 in x NH A CRS, 12954, 7100007009, 100 per case 