The Black Spiral Core Bit was created to meet the market demand for a product of the same quality as the Gold Spiral® core bit, but longer, in this case increased to 200 mm, to facilitate operating speed when carrying out jobs. In this case, the core cleaning operation is required 30% less than with 150 mm long core bits. See “Gold Spiral® Core Bit” for technical characteristics. Useful core bit length: 200 mm.
| TECHNICAL TABLE | |
| Cured Concrete / Bricks / Roofing tiles | ★★★★★ | 
| Slightly reinforced concrete | ★★★★★ | 
| Highly reinforced concrete | ★★★★★ | 
| Granite/ Natural stone / Porphyries | ★★★ | 
| Marble | |
| Refractories | ★★ | 
| Sandstone/Washed gravel slabs | ★★ | 
| Double fired ceramic tiles | ★ | 
| Single fired ceramic tiles | ★ | 
| Porcelain stoneware/Klinker tiles | ★ | 
| Fresh cement | ★ | 
| Asphalt | ★ | 
| Cutting speed | ★★★★★ | 
| Average life | ★★★★ | 
| sufficient ★ average ★★ good ★★★ excellent ★★★★ super ★★★★★ | |
| CAN BE USED ON THE FOLLOWING MACHINES | 
|  32-42-57-68-82-102-112-127-142-162 | 










