The Senix 4QL blower features a four-cycle engine that does not require mixing gas and oil but remains lightweight and powerful, capable of clearing even the heaviest debris. Four-cycle engine has lower emission and is more environmentally friendly than 2-cycle. The fan and motor are designed to reach up to 410 CFM and 125 MPH for excellent debris and leaf clearing capacity. Dual handle grip. The lightweight design makes the job easy and comfortable. All Senix 4QL gas powered products are backed by our 3-year limited warranty for your peace of mind.