This flange gasket set ensures leak-proof sealing and longer durability for 105-135 gearboxes used in 4-stroke power tillers. Designed precisely for 178F, 186F, 188F, and 177F models, it provides a reliable fit, reduced maintenance, and improved performance. The 10-piece pack offers convenient replacement during gearbox servicing and prevents oil leakage to enhance the efficiency and lifespan of your power tiller machinery.