NBK Japan MJC-40CS-EGR 3/8" to 12mm Jaw-type Flexible Coupling 🔔 210 outer and it's made from 52100

and it's made from 52100 chrome steel for durability

NBK Japan MJC-80-ERD 1 3/4 inch to 1 3/4 inch

6218-2Z and 6218ZZE

- shaft support and alignment in industrial setups - sealed

They’re used as the rolling elements in precision bearings

NBK Japan MJC-40CS-EGR 3/8" to 12mm Jaw-type Flexible Coupling 🔔 210 outer and it's made from 52100NBK Japan MJC 40CS EGR 3 8 inch to 12mm Jaw type Flexible Coupling NBK Japan MJC 40CS EGR 3 8 inch to 12mm Jaw type Flexible Coupling NBK Japan MJC 40CS EGR 3 8 inch to 12mm Jaw type Flexible Coupling, this is a Jaw type flexible coupling. The bellows allows eccentricity, angularmisalignment, and end play. Coupling Bore 1 Diameter: 3 8 inch Coupling Bore 2 Diameter: 12mm Coupling Length: 66 Coupling Outer Diameter: 40 Material: Stainless This is a jaw