This special accessory for the GS 461 STIHL ROCK BOSS® will help you expand your capabilities into cutting ductile iron pipes. With wet-only cutting of up to 17.7 inches and reinforced drive links for tough jobs. Features a vacuum-brazed diamond segment which aids in making plunge cuts. The ductile iron chain and bar are the perfect pick to take along to jobs where you’ll perform pipe laying and repair work.