Purchased 2.3 years ago and used a few times by a child, then stored. Please be aware of minor scratches and wear. Brand: Things 4 Strings Size: 5cm Color: Black Product Dimensions (L x W x H): 8 x 5 x 4 cm Top Material Type: Silicone Rubber Back Material Type: Rubber Bow hold correction tool for violin and viola Adjustable position to fit hand sizes from 3 years old to adults Compatible with all bow sizes Made of medical-grade silicone rubber Made in the USA This accessory not only exceeds the strict standards of patent offices in over 40 countries but also receives overwhelming support from teachers around the world. Since the company's establishment in 2009, we have consistently received positive feedback from students, parents, teachers, and school programs. This accessory is available in various colors, from black to vibrant pink. This product is made in the USA. Bow Hold Buddies is an accessory developed to help learn the correct way to hold a violin or viola bow. It's a simple system, but it helps beginners of all ages, from children to adults, master the correct right-hand technique. The two parts of Bow Hold Buddies are easy to set up, allowing you to hold the bow effectively in a relaxed state. The underside of the larger part, called "Frog Frog," is a thumb guide, allowing you to place your thumb in the correct position at a natural angle. The smaller part, called "Hold Fish," is a pinky guide. It helps you develop the sensation of lightly supporting the stick with the tip of your pinky. The contact points when holding the bow with Bow Hold Buddies are exactly the same as when holding the bow without them. This tool simply supports you in preventing your fingers from going into the wrong positions. As you learn proper bowing and playing the instrument, the correct bow hold is naturally memorized by your body, and your right-hand technique develops naturally.