Taper bits, especially Tapered button bits are the most popular tapered drill bits with a wide selection of head diameters from 26mm to 48mm. With carbide buttons hot pressed on the bit skirts, tapered button bits have a good drilling performance and are excellent in longevity.
We manufacture various tapered button bits in different degrees as below:
Bit diameter: 26mm to 60mm;
Tapered degree: 4°， 6°, 7°, 11°, 12°;
Shank sizes: Hex. 19mm, Hex, 22mm and Hex. 25mm;
Carbide type: Chisel type, Cross type, Button type.
| Length (L) | Weight | |
| mm | foot/inch | approx, kg |
| 800 | 2″ | 2.8 |
| 1220 | 4′ | 4.2 |
| 1525 | 5′ | 5.3 |
| 1600 | 5’3″ | 5.3 |
| 1830 | 6′ | 5.9 |
| 2000 | 6’6% | 6.6 |
| 2435 | 81 | 7.7 |
| 2435 | 8′ | 7.9 |
| 3200 | 10’6° | 10.3 |
| 3655 | H’117/8″ | 11.7 |
| 4000 | 13’V/21 | 12.8 |
| 4800 | 159， | 15.2 |
| 5600 | 18’4 ‘ | 17.6 |
| 6400 | 21′ | 20 |
| 7200 | 23″ | 22.4 |
| 8000 | 26*3″ | 24.9 |
