Husqvarna 537338307 Line Trimmer Cutting Head Genuine Original Equipment Manufacturer (OEM) Part This part is compatible with models including; 128C,GT2128 Cutting head 537338307 attaches to the drive shaft and houses the cutting line Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Husqvarna,Poulan This cutting head (part number 537338307) is for line trimmers Wear work gloves to protect your hands when installing this part