Oilfield Drilling High Strength Sucker Rod Coupling,Coupling Diameter: 5/8 ",3/4",7/8",1",1-1/8" Product Description Product Feature: API Sucker Rod Coupling, Class SM 1,Material: AISI 5140 (40Cr), 2...View More
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High Strength Sucker Rod Coupling 5/8 " For Oilfield Drilling