Purchased from Sengoku Denki and used a few times. It has been stored since then, and operation has not been confirmed. This is being sold as junk, so returns due to malfunctions are not accepted. Please use it for your own arcade stick, etc. The dome button part and the microswitch part will be shipped separately. We are unable to provide support regarding usage. - Colors: Red, Blue, Green, Yellow - Quantity: 8 - Shape: Round - Material: Plastic