Push buttons hole diameter: 12mm, push buttons hole thread: 0.75mm. Package includes 12 pieces of waterproof momentary push buttons, 6 colors (red, yellow, blue, green, black, white), 2 pieces of each color. Rated voltage: 3V-5V-9V-12V-24V-230VAC / 3A, size: 2.1 x 1.8 cm, 2 pins. Press the button to turn on; release to turn off. Mini push buttons made of solid plastic and alloy material, high-precision mechanism design provides perfect function and long service life. The screw design facilitates installation. The 12-piece nut and 12-piece spacer make the installation more stable. Fit for cars, trucks, ignition systems, doorbells, car horns, small household appliances, light decorations, etc., Manufacturer: Gebildet