Clean burning propane gas is delivered to your burnisher by these specially manufactured buffer cylinders. Mower cylinders are designed and patented specifically for lawn care use. Available for horizontal or vertical service, depending on application. Provided with left-handed male safety coupler. standard propane cylinder fittings include: safety relief valve, float gauge, fixed liquid level, vapor service valve and quick filling Fill valve. Collar painted green for product differentiation. Click "Add to Cart" to get shipping cost calculator.