25.4 cc professional-grade two-stroke engine manufactured from military-grade magnesium  Easy start-ability especially for re-starts in hot, dusty climates Large 20.6 fluid ounce fuel tank for extended run time between fill-ups  Tool-less access for convenient in-field servicing  Two-stage air filtration system dramatically increases cleaning capability and allows for longer maintenance intervals  Over-molded front and rear hand grips for extreme comfort  21″ double-sided, double-reciprocating RazorEdge blades for long-lasting sharpness  51″ shaft enables operator to trim tall hedges 7 degree angled shaft provides a wide-angle view for trimming complex shapes Offset gear case design provides ideal spacing between user and cutting surface