China T51 89mm Thread Rock Drilling Button Drill Bit, Find details about China Thread Drill Bit, R32 Bit from T51 89mm Thread Rock Drilling Button Drill Bit
T51 | Head shape | Diameter (mm) | Bit length (excluding alloy) | NO.of flushing holes | NO X button diamter | |||
Front | Side | Toothed | Gauge | Front | ||||
Standard Button Bit | Center Drop Bit | 89 | 155 | 4 | - | Semi-Ballistic Button+Semi-Ballistic Button | 8XØ12 | 4XØ12 +2XØ11 |
Flat Face Bit | 115 | 160 | 2 | 2 | Round Button+Ballistic Button | 8XØ14 | 6XØ13 | |
Center Drop Bit | 127 | 165 | 4 | - | Round Button+ Round Button | 8XØ14 | 4XØ14 +3XØ13 | |
Retrac Button Bit | Center Drop Bit | 89 | 170 | 4 | - | Ballistic Button+Ballistic Button | 8XØ12 | 4XØ12 +2XØ11 |
Center Drop Bit | 102 | 180 | 4 | - | Ballistic Button+Ballistic Button | 8XØ13 | 4XØ13 +2XØ12 | |
Flat Face Bit | 115 | 185 | 2 | 2 | Round Button+ Round Button | 8XØ14 | 6XØ13 |