The Senix 4QL Gas Powered 31cc Straight Shaft Grass Trimmer features a 4 cycle engine that does not require mixing of gas and oil but remains lightweight and powerful. Four-cycle engine has lower emission and is more environmentally friendly than 2-cycle. Large 17.7-inch cutting width saves you time by trimming a larger surface area. The straight shaft design with a standardized coupler provides extended reach under bushes and shrubs and the use of attachments. Includes dual-line bump head with .095 line, additional spool and shoulder strap.