Unique Cut-n-Break method cuts in stages of 2 1/2in. deep with 9in. twin diamond blades, leaving a thin core that is easily broken off with included breaking tool. Cutting can continue until required depth is reached, up to 16in. Ideal for cutting window and door openings to avoid overcutting at corners. Also works for cutting pipes in trenches, grooves for cabling, expansion joints and crack chasing. Gas engine has Smart Carb™ to maintain high power and save fuel, Active Air Filtration™ to extend product life and service intervals, and dust-sealed starter to reduce downtime. Anti-vibration system makes saw more comfortable to use.