اسم العلامة التجارية
Deris and Kingdream
رقم الموديل
buyer's requirement
Color
golden,red,bule and so on
Teeth
button tooth or steel tooth
Market
USA,Middle East,South Africa
Applicaton
oil/water well drilling
bearing type
metal or rubber seal bearing
additional materials
gauge protection
Model Number
TCI(tungsten carbide insert) bits