Description
D.I.D.’S 520Nz Chain Is A Non O-Ring Chain With Solid Bushing And Quad-Riveted Pins. D.I.D.’S Sdh High-Tech Pin Treatment Forms An Extremely Hard Chromium Carbide Layer On The Pin’S Surface While Maintaining A Softer Inner Core. Sdh Treated Pins Have Extreme Impact Strength While Adding Outstanding Shock Absorption. The Sdh Process Creates A Chain With Superior Wear Resistance, Outstanding Anti-Oxidation Properties And Performs Well In Dusty And Muddy Conditions.
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