
| Specifications: | Front End Diameter (mm) | Rear End Diameter (mm) | Overall Length (mm) | Materials |
| 0.7*4mm | 0.7 | 2.3 | 36.75 | 316 stainless steel |
| 0.8*4mm | 0.8 | 2.3 | 36.75 | 316 stainless steel |
| 0.9*4mm | 0.9 | 2.3 | 36.75 | 316 stainless steel |
| 1.0*4mm | 1.0 | 2.3 | 36.75 | 316 stainless steel |
| 1.1*4mm | 1.1 | 2.3 | 36.75 | 316 stainless steel |
| Flat mouth hair transplant needles and tooth mouth hair transplant needles are of the same specification and size | ||||

| The difference between flat mouth and tooth mouth | ||
| Characteristics: | Flat mouth needle | Tooth mouth needle |
| Needle tip design | Smooth round oval opening |
Openings with fine serrations (usually 4 - 6 teeth) |
| Core strengths | It is relatively less traumatic and easy to operate |
Better hair follicle fixation reduces the risk of popping/shifting |
| Directional control | Rely on doctor technology | The serration "locks" the tissue fixation is significantly improved |
| Tissue trauma | Relatively smaller | Relatively large |
| Specifications | Needle Tube Outer Diameter(mm) | Needle Inner Diameter(mm) | Overall Length(mm) | ||
| Straight pipe ring drill 0.7mm | 0.9 | 0.7 | 16.1 | ||
| Straight pipe ring drill 0.8mm | 1.0 | 0.8 | |||
| Straight pipe ring drill 0.9mm | 1.1 | 0.9 | |||
| Straight pipe ring drill 1.0mm | 1.2 | 1.0 | |||

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