Thank you for viewing. These are Furutech rhodium-plated banana plugs. While there is some slight wear on the plating from insertion and removal, I believe they are in overall good condition. However, when attaching and detaching the banana plug body and the cover, you need to rotate the cover. I found the rotation direction a bit unintuitive, so I've only lightly assembled them. Therefore, when removing the cover to connect the cable, I recommend gently rotating it to confirm the loosening direction before working. Thank you.