Violin Bowmaster (Bow Hold Guide) - Large (3/4 - 4/4 size)

Violin Bowmaster - Violin Bow Hold Guide 

Bowmaster is a teaching aid to assist beginners in developing the proper bow grip. Made of rubber that slides onto the bow. Manufactured to fit different size hands

Available in 3 sizes: 

Small (suits 1/16 - 1/8 size)
Medium (suits 1/4 - 1/2 size)
Large (suits 3/4 - 4/4 size)