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SDS Max Hammer Drill Bits 4 Flute 4 Cutter (Cross-Head) (HD-007)
Hangzhou FANXI Tools CompanyChina Step Drag Drill Bit for Water Well Drilling
Shandong Yikuang Drilling and Mining Technology Co., Ltd.3 7/8″ Step Drag Bit Three Wings Carbide Steel Drag Drill Bit
Shandong Yikuang Drilling and Mining Technology Co., Ltd.