Features: Make of silicone, soft and flexible. Enable player to maintain a natural and comfortable grip. With Two small finger position sepecial design to adjust from different size of hands. Easy to fixed to the bow and release from the bow. Suitable for 4/4 3/4 1/2 1/4 1/8 Size violin bow. This promotes proper hand positioning and technique while playing the instrument. Specifications: Materials: Silicone Color: Black/White/Blue/Pink/Grey/Yellow/Orange Size: about 115x57x20mm/4.53x2.24x0.79inch Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1set Violin Bow Holder