The Poulan Pro PP428C 4-Cycle 28cc curved shaft gas trimmer makes getting started a little easier with no more mixing of fuel and oil like you need to do for 2-cycle engine trimmers. With a spring assisted start system and 17" maximum cutting width, this model is easy to use, efficient, and cost effective. Split boom shaft with Pro-Link attachment system transforms your trimmer into a multi-functional yard machine. Additional attachments including a blower, brush cutter, cultivator, pole pruner, and edger are sold separately.