We, Royal Micro Irrigation Systems Are Authorised Dealers And Service Providers Of Garden Machinery. The new GS 461 concrete cutter combines all the new features of a STIHL chainsaw plus many new features that will make cutting concrete easier, quicker and with more comfort. The GS 461 is designed for free hand cutting in concrete with re-enforcing, natural stone, sewage pipes (concrete, ductile iron) and general masonry. The GS 461’s maneuverability makes it perfect for cutting in tight spots or close up against a 90 degree corner. Suited to the professional user, the GS 461 is ideal for rental outlets, landscape gardeners and fire and rescue services.