This is Echo's Trimmer with a 21.2 cc professional-grade, 2-stroke engine for outstanding performance. i-30™ starting system for reduced effort starting, 24" double-sided, double-reciprocating RazorEdge™ blades are precision ground and laser cut for long-lasting sharpness. Redesigned gear box provides dependability and durability. Commercial-duty air filtration system for long engine life, ergonomic front and rear handles for a comfortable grip.