Color ： Black Nickel, White Nickel, Matte Balck, Zinc Black, gold
Material ： All stainless steel, or Stainless Steel Wire with Brass tube, or all brass
| American parent-child rotation | ||
| model | length/mm | width/mm |
| 5/0*4/0 | 32 | 30 |
| 4/0*3/0 | 30 | 28 |
| 3/0*2/0 | 28 | 25 |
| 2/0*1/0 | 25 | 23 |
| 1/0*1 | 23 | 21 |
| 1*2 | 21 | 19 |
| 2*3 | 19 | 18 |
| 3*4 | 18 | 17 |
| 4*5 | 16 | 14 |
| 5*6 | 14 | 13 |
| 6*7 | 13 | 12 |
| 7*8 | 12 | 10 |
