Stringvision Bowgrip. For Violin, Viola and Cello.

PLESIU Stringvision Bowgrip. for Violin, Viola and Cello.

WADA Cello Bow Grip Aid: A Correct Bow Hand without Strain. A Second to Attach to the Bow and Remove. You can Concentrate on your Sound and Music with a Relaxed Hand and Arm from the Beginning.

Suzuki Cello School, Vol. 1: Cello Part, Revised Edition