RK Takasago Chain 12-531-114 Heavy Duty Chain 530H 114 LinkRK reliable Non Sealed economical chain for heavy duty usage, improved strength compare to standard chains. Manufactured from carbon alloy steel, heat treated and shot peened for maximum strength and durability, apply Cold Forged Seamless Bush for longer chain life. All RK chains are pre stressed and pre stretched for superior performance and minimize elongation during the life of the chain. Excellent quality and cost performance for heavy duty