When you need to cut deep into concrete, reach for the Boss â€“ the STIHL GS 461 Rock BossÂ®. This revolutionary concrete cutter changes the game with enhanced performance that cuts up to 15.7â€ deep into concrete, reinforced concrete (with rebar up to Â½ 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. Itâ€™s a great addition to your construction site when you need to get serious with concrete materials. And because itâ€™s a STIHL, you know it delivers excellent performance. GS 461 Rock BossÂ® features include a low exhaust emission engine, HD2 heavy-duty air filter, advanced water controls, low vibration, and our exclusive Diamond Abrasive Saw Chain.