Product Description
- HARDMASTER : +-0.8% at LD=900, 200-900HLD
- 130 : +-10HLD, 170-960HLD
- MI 970 : +-0.8% at LD=970, 170-970HLD
Product Specification
| Code No. | Hardness |
| MI 970 | 170 – 970 HLD |
| 130 | 170 – 970 HLD |
| Hardmaster | 200 – 900 HLD |
| Curvature Ring Set | – |