UC3551A series are the successors of UC3530A series longitudinal body style electric chain saws. The oil pump and toolless saw chain change/ adjustment have been improved and the exterior design has been changed as new born models.- New adjustment lever for easier tool-less tension adjustment of saw chain.- Longitudinal motor provides greater manoeuvrability.- Improved oil pump keeps the delivery of chain oil constant, regardless of temperature and the oil viscosity.- Ergonomic soft grip.- Large separate-type metal spike bumper. Spike grips work-piece firmly to provide more control.- Oil fill level window.- Soft start.- Torque limiter.- Electric chain brake.- Double Insulation.- Kickback brake.- Electronic current limiter for overload protection.