Cutting Pick; Sleeve; Holder manufacturer / supplier in China, offering 7 1/2" 7 7/8" ~9 1/2" 9 5/8" 9 7/8" API Tricone Bit/ Rock Drill Bit/ Roller Cone Bit for Water/Oil/Gas Well Drilling, Premium U135 Coal Cutter Picks for Efficient Mining Operations, Heavy-Duty Coal Mining Crush Hammer for Efficient Material Handling and so on.