The HERCULES Violin/Viola Stand DS571BB features the Auto Grip System (AGS) yoke that protects the instrument and is compact enough to transport easily. The built-in auto grip system safely locks the instrument in place. It also includes detachable rosin/utility holder. The Hercules Travlite Violin/Viola Stand is made from lightweight aluminum and the Auto Grip System holds your instrument securely. The Bow rest, lined with Specially Formulated Foam, Folds compactly for easy carrying. Height: 445-820mm (17.5-32.2 ") Weight: 0.56 kg (1.23 lbs.) Base radius:250mm (9.8 ") Folded size: 455x85mm (18x3.3 ")