1 inch. A piccolo is like 13x14 or 13x13. Take the crappty stapled cover off. It might even be glued on. Unless you like it. It's connected in one spot. Comes off easily. I'll help you if you want me to. Tell me where you are at. You are lucky I am here right now. Free lessons!!!
A piccolo is usually 3 x13. I am not helping no more if you don't say where you are from. I got 30+ years and if you can't say where you come from, I walk. I had a stroke but I can still think.
I'm not a tweak. I just thought I could ship you some tung oil if you were stateside. I bought a gallon and have alot extra. It's also nice to know where the person is from. I was a kid once too. I wish I had the money back from all the crap I bought. Just trying to help you guys out.