Torino Pro Bristle Firmness guide

Soft- Great for brushing after a cut or when your hair is low. (Your hair texture determines what is considered "low" for you) 

Medium- The most versatile. Can be used on a fresh cut or in the beginning stages of wolfing. 

Medium Hard- Great for early stages of a wolf or in a full out wolf. 

Hard- Best for wolfing or someone with thick hair.