Dobinsons Coil Spring options Select your desired coils. We proudly manufacture the highest quality replacement coil springs for many different applications, complying to ISO9001:2008 international quality standards from our state of the art manufacturing facility in Central Queensland, Australia. All our coil springs are load tested and scragged 100% to eliminate subsequent spring sag. We also perform spring fatigue and hardness testing using in-house state of the art testing equipment. Features: Fully Designed, Manufactured, and Finished In AustraliaUltra modern design technology, Fully Scragged & Load TestedState of the Art Heat Treatment, High Intensity Shot PeenedFormed on Precision Mandrels, Precise End ConfigurationsDurable Powder Coat FinishSold in Pairs