The Deflection-proof andAbrasion-proof Sucker Rod Coupling, i.e. The Spray metal Sucker RodCoupling, is my special product, which is processed with somespecial technology, coated a layer of abrasion-proof, wear-proofand lessening friction coat in a high temperature. It can’t onlyprotect itself but also the rod, preventing and slowing down thewear. The coupling has many types and sizes, and it is made of goodquality using steel alloy AISI 5140. It has three functions: wearproof, corrosion-resisting and reducing thefriction.