Dia of balls from 11mm and every 0.02mm up, to the max dia of 14.8mm(11-14.8mm), good to remove the dents on trumpet/trombone bell bows and tubing.

Package Include: 3 rods, 22 egg balls, 1 magnet egg ball, one wrench see pictures.

Length of rod: 61cm,43cm,44cm.

Material: 

Made of high quality, high hardness steel with velectrophoresis chromium so that they have very smooth surface to avoid any harm of your instruments. (rust free)  

Suita ble for Trum pet, Horn, Trombone and other Wind instrument.