The 680GC gas powered concrete chainsaw from ICS Blount has improvements in carburetion, the starting system and airflow over the previous model. The unit can plunge cut to 12 in. and make square corners with no overcuts in reinforced concrete, natural stone and masonry. The 680GC weighs 21 lbs. and requires a standard garden hose for its wet cutting system. Its 80cc, 2-stroke engine generates nearly 6 hp. The unit is available with 12- or 14-in. guidebars.