Tungsten Carbide Tips for Integral Drill Steel YK15.6, YK20

Hex 15 Integral Drill Rod For Y6/Y8

Hex 15 Integral Drill Steel（Plug Hole Rods)

Hollow Hexagonal Drill Steel

Integral Drill Steel

T45 Full Bridge Coupling Sleeve

Coupling Sleeve full-bridge type R32T38-190MM

Coupler d 55мм

Coupling sleeve T 38 , T 45 , T51

Crossover couplingT45-T38

Bit Adapter Coupling

Coupling Sleeves Semi-Bridge Type T38-190 mm