Color: Black. Material: Plastic. Size: 7.7 x 1.38 x 1.38 cm. Aligns the first hole position with the bow direction and secures into the bow. Grasps the lower part of the bow, positioning it approximately 10 mm above the frog. The violin bow grip helps beginners maintain proper bow hold and hand position, significantly improving the learning process. Restores the bow's natural arch. Tighten the bow screw at the tail to use. Compact and lightweight design; durable and practical. Easy to use and suitable for teaching purposes. Note: Due to lighting effects, monitor brightness, and manual measurement, there may be slight variations in color and size between the image and the actual product. We appreciate your understanding.