The RYOBI Rear Tine Tiller Shear Pins are the best solution when it is time to replace your shear pins on the RYOBI 40V HP Brushless 18" Rear Tine Tiller (RY40702). In order to limit damage to the unit, these pins are designed to break if the tines jam, due to obstructions in the soil such as rocks & other debris, or if a designated load is reached. The RYOBI Replacement Shear Pins are compatible with RYOBI 40V HP Brushless 18" Rear Tine Tiller RY40720, RY40702B, AND RY40702K2 and includes (6) bolts and (6) shear pins.