6 blades PDC drill bit for oil /coal mining and oil exploration
Negotiable /Piece
Min.Order:1 Piece
Shaanxi Senwell Import & Export Co., Ltd.
Standard: API Spec 7
Nominal diameter (in): 4" ~ 17 1/2"
Formation: from extremely soft to Medium Hard
API REG. pin size (in): 2 3/8", 2 7/8", 3 1/2", 4 1/2", 6 5/8"