RETRAC THREAD BITS from Brighttop Global Co., Ltd are engineered for top hammer rock drilling applications in mining, quarrying, tunneling and construction. The innovative retrac skirt design enhances hole straightness and bit retrieval, while premium alloy steel construction and tungsten carbide buttons deliver stable drilling performance, superior wear resistance and reliable service life in medium to hard rock formations.
| S/N | Bit Dia. (mm) | Thread | Gauge Button Size | Front Button Size | Gauge Button Angle | Flushing Holes Side (pcs) | Flushing Holes Front (pcs) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1 | 76 | R28 | 9 × 12 | 2 × 10 1 × 9 | 35° | 3 | 1 | 1.8 |
| 2 | 76 | R28 | 9 × 12 | 3 × 10 | 35° | 3 | 1 | 2 |
| 3 | 76 | R32 | 9 × 12 | 3 × 10 | 35° | 3 | 1 | 1.8 |
| 4 | 76 | R32 | 9 × 12 | 3 × 10 | 35° | 3 | 1 | 2 |
| 5 | 89 | R32 | 12 × 12 | 3 × 10 | 35° | 2 | 1 | 2.5 |
| 6 | 89 | R32 | 12 × 12 | 3 × 10 | 35° | 2 | 1 | 2.7 |
| 7 | 102 | R32 | 12 × 13 | 2 × 13 1 × 11 | 35° | 2 | 1 | 3.5 |
| 8 | 102 | R32 | 14 × 12 | 4 × 8 | 35° | 2 | 1 | 3.8 |
| 9 | 127 | T38 | 14 × 14 | 2 × 12 1 × 11 | 35° | 2 | 1 | 4.8 |
| 10 | 127 | T38 | 14 × 14 | 3 × 10 | 35° | 2 | 1 | 5.3 |
Wood Box + Pallet