Ryobi RY253SS 25cc Straight Shaft 18" Lawn Grass Weed Trimmer 2 Cycle Gas Power Get those hard to reach spots and keep your lawn beautiful with the straight shaft Full Crank engine for 2x longer life Expand-it Attachment System converts to Pruner, Edger, Blower, Tiller, Straight Shaft Trimmer 50:1 Gas to Oil ratio, which is 2.6oz of oil to 1 gallon of gas. Do NOT use E85 gas Zip Start carburetor for easier starting