Laskey Alessi Signature Model SP For 55LS Large Shank Similar in size to a Bach 6 1/2, but with a wider and deeper cup, allowing for a full breath. I think it would work very well with Getzen, Edwards, Shires, etc. There are some minor scratches, but it's in beautiful condition with no issues affecting performance. However, please understand that this is a used item before purchasing. - Brand: Laskey - Model: Alessi Signature Mouthpiece - Size: 55SY 55 Symphony Rim: 25.5 Throat: 7.16 Cup: Mid-Deep #Trombone #Laskey #Mouthpiece #Alessi #Trombone