Description:
| Model | ER8,ER11,ER16,ER20,ER25,ER32 |
| Material | Manganese Steel 65 |
| Precision | 0.015mm |
| Conical Degree | 16 |
| Maximum Aperture Diameter | 13mm |
| Minimum Aperture Diameter | 0.5mm |
| Available Diameter | Φ1,Φ1.5,Φ2,Φ3.175,Φ4,Φ5,Φ6,Φ6.35,Φ7,Φ8,Φ9,Φ10 |
| More optional | Φ11,Φ12,Φ12.7,Φ13 |
