母预缘端头（插簧）
| ITEM . | Name Tab(mm) | Thickness of material | Dimension(mm) | Color | ||||
| B | Dφ | dφ | L | H | ||||
| FDD 1.25-110(5) | 0.5×2.8 | 0.3 | 3.8 | 3.8 | 1.7 | 19 | 10 | red |
| FDD 1.25-110(8) | 0.8×2.8 | 0.3 | 3.8 | 3.8 | 1.7 | 19 | 10 | |
| FDD 1.25-187(5) | 0.5×4.75 | 0.35 | 5.6 | 3.8 | 1.7 | 19 | 10 | |
| FDD 1.25-187(8) | 0.8×4.75 | 0.35 | 5.6 | 3.8 | 1.7 | 19 | 10 | |
| FDD 1.25-205 | 0.5×5.2 | 0.35 | 6.5 | 3.8 | 1.7 | 20 | 10 | |
| FDD 1.25-250 | 0.8×6.35 | 0.4 | 7.4 | 3.8 | 1.7 | 21 | 10 | |
| ITEM . | Name Tab(mm) | Thickness of material | Dimension(mm) | Color | ||||
| B | Dφ | dφ | L | H | ||||
| FDD 2-110(5) | 0.5×2.8 | 0.3 | 3.8 | 4.3 | 2.3 | 19 | 10 | blue |
| FDD 2-110(8) | 0.8×2.8 | 0.3 | 3.8 | 4.3 | 2.3 | 19 | 10 | |
| FDD 2-187(5) | 0.5×4.75 | 0.35 | 5.6 | 4.3 | 2.3 | 19 | 10 | |
| FDD 2-187(8) | 0.8×4.75 | 0.35 | 5.6 | 4.3 | 2.3 | 19 | 10 | |
| FDD 2-205 | 0.5×5.2 | 0.35 | 6.5 | 4.3 | 2.3 | 20 | 10 | |
| FDD 2-250 | 0.8×6.35 | 0.4 | 7.4 | 4.3 | 2.3 | 21 | 10 | |
| FDD 2-312 | 0.8×8.0 | 0.4 | 9 | 4.3 | 2.3 | 23 | 10 | |
