Insize ISR-CSE322, SURFACE ROUGHNESS SPECIMEN, 8pcs per set, 6928640376634

Machining method: reaming.
Ra: 16, 32, 63, 125_in. Rz: 68, 128, 256, 512_in. Quantity 4pcs;
For checking, identifying and specifying the roughness by symbol.
Rust-proof, made of pure Nickel.