Troy-Bilt TB516 EC 29cc 4-Cycle Wheeled Edger with JumpStart Technology The TB516 EC 29cc 4-cycle premium engine requires no mixing gas and oil Equipped with Spring Assist Starting Techology, JumpStart capable, provides an easy start with just a smooth and steady pull The heavy-duty 9-inch dual-tipped steel blade cuts a clean edge along driveways and sidewalks, edging with a 1.75-inch max depth A fully-molded foldable ergonomic handle design with a handle mounted throttle and idle controls makes for smooth operation, and easy storage 3 premium transport wheels for added stability and control