The violin bow corrector is easy to use and can be attached to any standard violin bow. It is an excellent accessory for teachers to use during lessons, as it provides immediate feedback the student's hand position. This tool helps in correcting such as improper finger placement and tension, making it an invaluable addition to any violinist's tool. Features -Color:Black -Material:Silicone -Size:11.50X5.70X2.00cm/4.52X2.24X0.79in -Size:2.80X1.45X1.10cm/1.10X0.57X0.43in -Precision hand correction: help in achieving the correct bow hold for both children and adults, boosting playing proficiency -Gentle silicone material: made from silicone, it offers a gentle and comfortable grip, safeguarding the hands -Broad age range: suitable for users of various ages, making it a flexible tool for different demographics -Effortless installation: designed for easy and swift installation and removal, ensuring easy use -Multiuse functionality: practical for violins and other string instruments, providing extensive application Package list: 1 set of gripper