Description This item is a violin bow straightener made of premium ABS and steel materials, ensuring durability and reliable use. It is designed to help correct improper playing posture and support the development of good bowing habits for beginners. Featuring a double-section, double-track design, it offers enhanced stability and convenience during practice. Features - Color: Black - Material: ABS and steel - Size: approximately 15.3 x 12.5 x 1.3 cm (6.02 x 4.92 x 0.51 inches) - Designed for easy and convenient use by beginners - Constructed with ABS and steel for long-lasting performance - Adjustable steel bar that can be inserted into the corresponding slot based on user preference - Lightweight and portable - Simple to use with effective results, helping players focus on rhythm and intonation Packing List 1 x Posture Corrector