| Diameter of spherical seat | Da | 47 | mm |
| Top width | A1 | 21 | mm |
| Foot height | H1 | 3 | mm |
| Distance between attachment bolts | J | 76 | mm |
| Length of attachment bolt hole | N1 | 9.60 | mm |
| Base width | b | 32 | mm |
| Height of spherical seat centre | H | 25.30 | mm |
| Overall height | H | 50.50 | mm |
| Overall length | L | 98.50 | mm |
