This genuine Ridgid 089037006057 switch key is a must-have for users of R4510, R4516, and R45101 table saws. It allows for easy control over the power source, which is corded electric. The brand Ridgid is known for its top-quality power tools and this switch is no exception. In addition to its functionality, it is important to note that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm, as indicated by the California Prop 65 Warning. Ensure that you take all necessary precautions when handling this product and keep it out of reach of children.