Catalog number: 20M-SW Features: ● Spherical type, so it can accommodate slight angles. Applications: ● Used for stability when tightening nuts. Specifications: ● Suitable bolt: M20 ● Outer diameter (mm): 40 ● Inner diameter (mm): 24 ● Height (mm): 13.0 ● One set for top and bottom Materials/Finish: ● Steel (S45C) ● Treatment: Hardening (27-35HRC), black dye finish
