| Model no. | Inscribed Circle Diameter | Outer diameter | Dimensional tolerance | |
| g6 | h6 | |||
| SP13 | 6 | 13 | -0.006 -0.017 | 0 -0.011 | SP16 | 8 | 16 | -0.006 -0.017 | 0 -0.011 |
| SP20 | 10 | 20 | -0.007 -0.020 | 0 -0.013 | SP25 | 15 | 25 | -0.007 -0.020 | 0 -0.013 |
| SP30 | 16 | 30 | -0.009 -0.025 | 0 -0.016 | SP35 | 19 | 35 | -0.009 -0.025 | 0 -0.016 |
| SP40 | 20 | 40 | -0.009 -0.025 | 0 -0.016 | SP50 | 26 | 50 | -0.009 -0.025 | 0 -0.016 |