Descriptions:Momentary type, 1NO contact, 2 terminals.This metal push button switch is suitable for 12mm diameter mounting hole.Used widely: Great for Power Button Switch, Led Switch, DIY projects or any circuit controls. Specification:Item Name: Push Button SwitchAction Type: Momentary TypeHead Shape: Hex High Flat HeadContact: 1NOSwitch Rating: AC 250V 2ASwitch Color: Silver TonePin Number: 2Thread Diameter: 12mm / 0.47inTotal Size: 21 x 16mm/0.83in x 0.63in(L*Max.W)Material: Copper Nickel Plating Package Content:1 x Push Button Switch