Features: MTM Hydro 4200 psi 3/8" Brass Quick Coupler and Plug Pack.MTM Hydros 3/8" Brass Quick Coupler and Plug pack provides a quick-and-easy way to attach your pressure washing gun to any pressure washing hoseConstructed out of highly durable brass and zinc plated steel, our couplers and plugs display the quality that is expected by the professional cleaner and homeowner alike, Lot of 1