China 3"-12" Diameter Three Wing Step Drag Bits, Find details about China Drag Bit, Step Drag Bit from 3"-12" Diameter Three Wing Step Drag Bits
Types | sizes |
Steps (3 wings and 4 wings) | 2"(51MM)~17 1/2"(444.5MM) |
Chevron (3 wings and 4 wings) | 2"(51MM)~17 1/2"(444.5MM) |