Engineered for durability and reliable performance, this steel collimator for violin bow practice offers long lasting use as an essential accessory for instrument training. Dual-Track Design with stable installation Two-stage dual-track design and practical double sockets allow easy insertion of the steel rod into the corresponding sockets. Grooved plastic card stickers provide a stable and convenient installation. Enhances the practice experience Specifically designed for bow clamp practice, this collimator is an effective accessory that helps beginners develop violin technique. It enables players to focus on rhythm and intonation, improving overall technique. 2-3 practical use scenarios - Home practice: use to build bow control, rhythm, and intonation during daily sessions. - Lessons and studios: provides a consistent reference for alignment and technique during instructor guided practice. - Warm-up and scales: aids in maintaining steady rhythm and accurate intonation while working through scales or arpeggios. Material and performance Made from steel for exceptional durability and lasting performance, ensuring a dependable addition to your instrument practice setup. Compatibility and size Designed for straightforward installation with the included dual-track sockets and stabilizing stickers, offering a reliable fit for standard violin bow practice routines.