10PCS Push Button Switch Self Resetting Flat Head Start Stop Button Switch 22mm Mounting Hole AC240V XB2BA31 FG05 1Self Resetting: This button switch has self resetting function, which automatically returns to the initial state after pressing the button, making it convenient and fast. 222mm Mounting Hole: This push button switch has 22mm mounting hole size, making it easy and convenient to install on various devices, suitable for more scenarios. 3Aluminum Alloy: The start stop switch is made of excellent aluminum alloy material, which has good durability and high stability, and can operate for a long time. 4Safe Operation: The voltage of the self resetting push button switch is AC240V, and the rated insulation voltage is 440V, ensuring safe and reliable operation. 510 Pieces in 1 Set: Including 10pcs self resetting button switches, flat head design, compact and lightweight, easy to install, convenient for use and replacement at any time.