Each tooth is long, sharp and thin. Occlusal state of teeth makes the overall dynamic when zipped up. It is novel and looks like a metal zipper.
| Size/End-type | |||||
| Model | Classification | ||||
| Close End | Open End | 2 Way Close End | 2 Way Open End | Chain | |
| 5# | √ | √ | |||
| 8# | √ | √ | |||
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