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3/8 In. 3-Position 200psi 10mm Orifice 40watt coil 8-Cyl Air-Engine Manifold Valve - 3/8 In. with all fittings harness slowdown & Speed control valves. It takes 1 of these for complete FBSS one on each corner. No assembly required Fittings and Harness and up/down Speed Controllers Included.