ESM Alto Saxophone Mouthpiece - Brand: ESM - Color: Black - Intended Use: For Alto Saxophone - Opening: #5 Thank you for viewing. I am selling a beautiful ESM alto saxophone mouthpiece. I have hardly used it since I purchased it. The condition is good, and I think it's relatively clean. The opening is #5. There is no box or ligature. The mouthpiece itself is the only item included. I am offering it at a low price with free shipping. Please take a look!