Thank you for viewing this product. This is a holder for the RC4PRO RC transponder. The second image is a sample of the transponder attached. For those who own multiple RCs, it can be financially challenging to prepare many expensive transponders... If you want to share a transponder with family or friends (maybe not often), or if you want to use one transponder for multiple vehicles, this allows you to attach and detach the transponder with a single touch. It's very easy to use. Just stick this holder to the car body and snap the transponder into the holder. To remove it, lift the front side (the cord side). However, pulling the cord strongly can cause it to break, so it's recommended to protect the base of the cord like the transponder in the image. (This does not guarantee 100% protection) This listing is for a set of 2. Please contact me if you would like a different quantity. I may be able to offer a slight discount for multiple items. Regarding this product, it is made with a 3D printer, so there may be fine bumps on the surface. There may also be stringing. I will check after creation, but please understand to some extent. The material is PETG-CF, which is a strong material. The color is "Black (glossy)". Due to the nature of the product (3D printed), the product condition is set to "Like New" even though it is unused. Shipping will be via "Yu-Packet Post Mini". It may take 2-3 days to ship. Thank you.