high quality and best service
API and ISO
higher average ROP
greater stability
greater durability.
Port: Tianjin seaport/China
Minimum Order Quantity: 1 Piece/Pieces
Supply Ability: 800 Piece/Pieces per Month
Payment Terms: L/C,T/T,Western Union
Contact SupplierPackaging Detail: Plywood cases
Delivery Detail: 7 workdays afer confirmation
The 517 features aggressive chisel tungsten carbide inserts on the heel rows and inner rows.This design provides a fast drilling rate and added cutting structure durability in medium-to-medium hard for-mations.The HSN rubber O-ring provides adequate sealing for bearing durability.
A LARGE STOCK