I was really into slide guitar for a while, and after enjoying some wine, I made this myself from an empty bottle. It still has the brand label on it. Please peel it off if it bothers you. Inner diameter: φ19mm (thin) - φ22mm (thick) Height: Approximately 65mm, cone-shaped. It's thick and has a good weight to it, and it feels much better than the thin, light ones you can buy. There are some chips from when I cut the bottle, but I've filed down all the edges to make them smooth, so you won't cut your finger on them. Enjoy the atmosphere of a handmade bottleneck, just like they do in the heart of Delta blues. Due to the nature of the item, please understand that it is sold as-is, with no returns or refunds.