- 215.9mm 8 1/2" tungsten carbide tricone bit for coal mining
- 2017-01-14 09:47
- Place of Origin:Hebei,China.Size:8.5inch(215.9mm).Material:Tungsten Carbide.Type:Drill Bit.Machine Type:drilling machine
- kingdream 8 1/2" 215.9mm steel tooth bit for water well dril
- 2017-01-14 09:46
- Place of Origin:Hebei,China.Material:tungsten carbideType:drill bitSize:8 1/2" 215.9mmIADC CODE:127Use:water well drilli