Push button hole diameter: 12mm, push button hole thread: 0.75mm. Package includes 12pcs waterproof momentary push button, 6 colors (red, yellow, blue, green, black, white), each color 2 pieces. Mini push button made of solid plastic and alloy. High-precision mechanism design provides perfect operation and long service life. Suitable for cars, trucks, ignition systems, doorbells, car horns, small appliances, light decorations, etc.