These high-quality Shock Springs have been selected to provide the perfect suspension performance for your ARRMA vehicle.Features: Strong and durable spring steel for long-lasting and consistent performance Precision manufactured for fast and easy fit Painted black for stealth looks SPECIFICATION: 85mm Length 24mm Outer Diameter 1.70mm Wire Diameter 1.21N/mm (6.91lb/in) Spring RateIncludes:2 x Shock Springs: 85mm 1.21N/mm (6.91lbf/in)