This Handmade piece of awesomeness is jewelry & a 45 adaptor! Definitely a must have for music lovers and DJ's! You could even use it on a 45 but the fingers are not flexible and would damage your record, so I will be including an actual 45 adaptor with your order that can be used! There has been other shapes made over the years, I picked the most common. However, a custom is an option since I have to make each one anyway:) I've been including a simple ball chain at 20 inches, just tell me the length if you want something different.