The Kanstul Educator Kit contains an assortment of twelve tops and seven backbores. This assortment is designed to aid educators in fitting their students with a proper combination based upon the students ability level, the requirements of the music, and the group sound. With this kit the educator can adjust the sound of an ensemble or help an individual student with specific needs.  Kits can be purchased including modular tops and backbores for trumpet, cornet, and flugelhorn. Please refer to our model list for specifications. Included is a conveniant carrying case. Inquire for price.