The Drive Tube with Solid Shaft Assembly is a high-quality replacement part designed for STIHL string trimmers, brush cutters, and weed trimmers. Made of durable plastic and metal materials, this silver unit is compatible with models such as STIHL FS40, FS38, FS45, and FS40C. The 52-inch long drive tube features a 1 HP engine with a 27.2 cc capacity, providing reliable power for outdoor maintenance tasks. With easy installation and no assembly required, this drive tube with flexible shaft assembly is a convenient and efficient choice for keeping your yard and garden looking neat and well-manicured.