Better operating then R-1, in China only our company produce such pattern. SizePatternTube Type40HQ Load11.2-24R-1 IrrigationT.T.25014.9-24R-1 IrrigationT.T.16611.2-38R-1 IrrigationT.T.130 11.2-24Assembly 20014.9-24Assembly 12811.2-38Assembly 104Note: Assembly include Tire, tube, wheel. Big Cleat Irrigation 14.9-24