Arnolds & Sons Trombone 6-1/2 AL-S

It's hard to evaluate mouth pieces without trying them all out first; still, if you're looking for something larger or smaller than your current then just have a little research of the sizes/properties. If you decide that this is what you need then the price is brilliant- it's certainly done the job for me. (If a beginner then this was the next size/upgrade up from the smaller 12c that usually gets bundled with a starter range trombone. I feel it conserves your lip better and allows for better bottom range at the expense of top range. Interchange mouthpieces for different applications!)

Honestly, it is a copy after a reputable brand, but it feels the same and costs only a fraction.

I bought them for my students, who find the stock mouthpiece of their trombones (usually 12C) too small. I would love to purchase some large-bore ones (4-5 G) as spare mouthpieces for myself, but it seems Thomann doesn't stock them.

I also bought many of their trumpet mouthpieces for my students to try. Because they're low-cost, I can buy quite a few without breaking the bank.

Overall, it is a great product suitable for students and professional players.