SCHALLER / S-Locks M Gold These are gold Schaller locking strap pins. I have them attached to a guitar. I probably used the strap less than 10 times, but I've used them for several years, so there are some minor scratches and signs of use. However, I think they are still in good condition and can be used for a long time. Here are the product details: https://www.soundhouse.co.jp/products/detail/item/249721/ Thank you for your consideration.