Rotary Corp brand aftermarket product. Fits Tygon Fuel and Lubricant Tubing for Petroleum and Petroleum/Alcohol blends. Gas and oil tubing for chain saws, small engines, snowmobiles, mowers etc. Flexible and Resists swelling and brittleness. (Yellow) Low permeation, Ethanol compatible. Temp. range 35 degrees below F to 165 degrees F.