Stick sizes are often denoted by a letter and a number, such as 2B or 5A. The number denotes the length of the stick. The wider the diameter, the smaller the number. As a result, a number 7 drumstick is rather thin. A number 5 is significantly thicker, while a number 2 is quite thick. Remember that higher numbers are intended for more subtle play. Traditionally, the letter in a drumstick model number signified the type of music the drumstick was designed to play. A - for "orchestra" model B - for "band" model, designed for concert band S - for "street" model, designed for marching bands