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.

Insize 4833-1E, TAPER GAGE, 1/32"?5/8", 6928640379680
3M 51003, Surface Protection Fabric 14 in x 50 ft, 7100223608 