Brief Introductions of Diamond Circle Wrench We provide differeent types of wireline core drilling parts such as diamond circle wrench, heavy duty pipe wrench and hoisting plug. The diamond distribution is well-proportioned on diamond circle wrench. This product is widely used in geological exploration and mining industry. Features of Diamond Circle Wrench 1) The diamond is wearable and hard to fall off. 2) Slip resistance: this can reduce the damage of tubes and serve a long using life. Available Size of Diamond Circle Wrench Inner tube wrench: BQ,NQ,HQ,PQ,LTK48,LTK60 Outer tube wrench: BQ,NQ,HQ,PQ,LTK48,LTK60 41mm,42mm,43mm,44mm,45mm,53mm,54mm,55mm,56mm,71mm,73mm,74mm,89mm,92mm,95mm,117mm