We are one of the professional manufacturers & suppliers of rock drilling tools, tungsten carbide button bits, DTH bits, DTH hammers, rock tools, coal mining tools, mining rock tools, quarrying tools, machine tools, DTH hammers & bits, retrac button bits, thread button bits, tapered button bits, chisel bits, cross bits, thread cross bits, tapered cross bits, shank adapter, shank adaptors, thread bits, taper bits, drill rod, drill bits, rock bits, mining bits, integral drill steel, tapered drill rods, thread drill rods, M-F (male-female) rods, extension rods, integral drill rods, pneumatic drill rods, self-drilling anchor, drifter rods, hollow drill steels, shoulder drive drilling, drifting and tunneling, bench and production drilling, furnace tapping tools, down the hole drilling, shield driving & TBM cutters, coal cutter pick-shaped bits. button bits, dth bits, dth hammer, dth drilling, drill bit, drill rod, tapered bit, thread bits, taper rod, rock bit, rock bits, shank adapter, shank adaptors, coupling sleeves, integral drill rod, tapered drill rod, extension rod, speed rods, mf rod, male-female drill rod, cutter bits, pick holder, coal mining tools, rock drilling tools, rock drills, screw air compressor, rock drilling rigs. Main threaded button bits are: R22-32mm, R22-36mm, R22-38mm, R22-41mm; R25-33mm, R25-35mm, R25-37mm, R25-38mm, R25-41mm, R25-43mm, R25-45mm; R28-37mm, R28-38mm, R28-41mm, R28-43mm, R28-45mm, R28-48mm; R32-41mm, R32-43mm, R32-45mm, R32-48mm, R32-51mm, R32-54mm, R32-57mm, R32-64mm, R32-76mm; T38-64mm, T38-70mm, T38-76mm, T38-89mm, T38-102mm, T38-127mm; T45-76mm, T45-89mm, T45-102mm; T51-89mm, T51-102mm, T51-115mm , T51-127mm; T60-92mm, T60-96mm, GT60-102mm, GT60-115mm, GT60-118mm, GT60-127mm, GT60-140mm, GT60-152mm etc.