Internal Thread 1/2 M22 3/8 High-pressure Mine Nozzle Dredging Pipeline Dredging And Cleaning Front 1 Hole Back 6 Holes 40~50L

Internal Thread 1/2 M22 3/8 High-pressure Mine Nozzle Dredging Pipeline Dredging And Cleaning Front 1 Hole Back 6 Holes 40~50L

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