Echo Pas-225 Pro-attachment Series Power Source 21.2 cc professional-grade, 2-stroke engine for outstanding performance i-30 starting system for reduced effort starting Ergonomic, adjustable left-hand grip for custom fit Not for use with Straight Shaft Edger, ProSweep, ProPaddle, ProThatch, or Bed Rederfiner attachments Single-source power head fits 12 PAS attachments with hassle-free change-out