Dimensions-D1
| No. | D1 | D2 | D3 | D4 |
| Part No. | RM12-16(Red) | RM12-16(Green) | RM12-26(Red) | RM12-26(Green) |
| Elements | 16 | 16 | 26 | 26 |
| I.D.(mm) | 12 | 12 | 12 | 12 |
| L(mm) | 128 | 128 | 182 | 182 |
| O.D.(mm) | 16 | 16 | 16 | 16 |
| A(mm) | 2.8 | 2.8 | 4.5 | 4.5 |
| Inner-core Color | Red | Green | Red | Green |
Btektech Industry
We have our own production factory and R&D team to ensure the stability of product quality and supply.