Fit most wheel simulators and wheel covers, Dicor€™s Air Inflation Systems allow access to both inner and outer dual wheels for inflating tires or checking pressure. Universal inflation systems include both UHS and RHS series.--------The UHS series combines the strength and flexibility of hydraulic hose with the extra protection of heat treated stainless steel braid. Fits most wheel simulators and comes complete with stabilizer brackets to keep hoses centered in hand holes for easy access. Set can be used for inner and outer Dual.