兩片式直接
優(yōu)點：
描述：
描述：
產(chǎn)品規(guī)格（單位: MM）
| Size | D | d | L1 | L2 | I | H | n | M | e |
| 2" | 69.4 | 60.4 | 66.0 | 102.0 | 30.0 | 27.0 | 4.0 | M6*25 | 7.0 |
| 3" | 99.6 | 89.0 | 103.0 | 132.4 | 48.0 | 27.0 | 6.0 | M6*25 | 7.0 |
| 4" | 126.0 | 114.4 | 112.0 | 157.4 | 51.0 | 27.0 | 6.0 | M6*25 | 7.0 |