Usage Tips: Suitable for automotive, marine, boats, and other applications. Heavy duty (50 amps) push-button momentary switch that is dust and moisture resistant. Push-to-make = SPST momentary. A push-to-make switch returns to its normally open (off) position when the button is released, indicated by brackets around ON. This is the standard horn or ignition type switch. 12V DC, 50A, SPST (single pole, single throw). Contacts are made of pure copper. Length: 6.2cm. Width: 2.8cm. Voltage: 12V. Color: Black. Material: Aluminum alloy and plastic. Package includes: 1 x Switch. Only the items listed above are included; other products are not included. Note: Lighting and display differences may cause slight variations in the color of the item shown in the picture compared to the actual item. Measurement may vary by +/- 1-3cm.