  |
SP SERIES | SP-15,SP-22,SP-30,SP-45 |
| Body material: Case hardened or through hardened carbon steel | ||
| SPS SERIES | SP-15,SP-22,SP30,SP45 | |
| Body material: Pressed steel with hardened ball race. | ||
| Ball material | 1.Carbon steel balls.
2.Chrome steel balls. 3.Stainless steel balls. 4.Ceramic balls |