The OREGON Jet Fit 4 Line Strimmer Head is designed for professional or intense use with straight shaft strimmers of 40cc and above. It features an easy-load system and is crafted with a metal aluminum bumper for durability and resistance to breakage. This strimmer head is suited for heavy-duty workloads such as overgrown lawns, weed control, thick vegetation, and bramble. It is compatible with most straight shaft counter-clockwise garden strimmers and brushcutters greater than 40cc, including brands like Husqvarna, Honda, and Oregon. The head can accommodate up to 4mm line of various shapes and comes with pre-cut Flexiblade lines (3 mm and 4 mm) and a washer kit for an aerodynamic, low-noise profile and reduced fuel consumption. Its rugged design ensures long-lasting performance even in harsh environments and under continuous use. Weight: 0.2645547144 pounds.