DuraGo 27210570 Rear Complete Strut Assembly Strut rod manufactured from high quality carbon steel with a chrome hardened finish into a "net pattern" meeting a minimum "Ra.04" surface finish for long lasting performance Seamless pressure tube micro finished to a Ra.04 surface for maximum strength and longevity Powder coated coil spring resists rust; wire diameter, coil count and spacing offer improved ride and chassis stability New strut top plate and bearing manufactured using 3D machining technology for precise alignment Double lip seal with integral wiper keeps oil and gas charge in and contaminants out