TQC 100 grid knife head has SP1702,SP1703、SP1704、SP1705、SP1706 has five models, each model corresponds to a different test range, suitable for TQC different series of models of 100 grid knives, using stainless steel, longer service life.
| Model | standard | Blade | Material | range |
| SP1702 | ISO/DIN 2409 | 6 teeth, spacing 1mm | stainless steel | <60μm (hard substrate) |
| SP1703 | ISO/DIN 2409 | 6 teeth, spacing 2mm | stainless steel | < 60 μm (soft substrate) > 61-120 μm |
| SP1704 | ISO/DIN 2409 | 6 teeth, spacing 3mm | stainless steel | 121-250µm |
| SP1705 | ASTM 3359 | 11 teeth, 1mm spacing | stainless steel | 0-50µm |
| SP1706 | ASTM 3359 | 11 teeth, spacing 1.5mm | stainless steel | 50-125µm |





