When you need to cut deep into concrete, reach for the Boss – the STIHL GS 461 ROCK BOSS®. This revolutionary concrete cutter changes the game with enhanced performance that cuts up to 15.7” deep into concrete, reinforced concrete (with rebar up to ½ inch), cinder blocks, masonry bricks, asphalt and soft stone. And it does all of this in a compact, lightweight package that is easy to maneuver and transport. It’s a great addition to your construction site when you need to get serious with concrete materials. And because it’s a STIHL, you know it delivers excellent performance. The GS 461 ROCK BOSS® features include a low exhaust emission engine, HD2 heavy-duty air filter, advanced water controls, low vibration, and our exclusive Diamond Abrasive Chain.