This is a leather key ring from S-Factory. The hole in the center can be inserted into a plastic bottle, so it might be a bottle holder. I think it can be used for various purposes, so thank you. Length 13.5cm, Width 5.5cm (body) ■Description S-Factory, which mainly sells online, is a leather goods maker. A licensed dealer that sells genuine Harley-Davidson apparel began displaying S-Factory products in March 2009. The fact that it is sold at Harley-Davidson's authorized dealers, which have strict screening for aftermarket products, is proof of its quality. Please try touching S-Factory leather once. Thank you.