The HERCULES Auto-Swivel Yoke Hanger GSP38WB PLUS rotates automatically to accommodate different shaped guitars or basses vertically and safely. It features an attractive wood base for home or studio use. SPECIFICATIONS: - The Auto-Swivel Yoke with Auto Grip System allows for multi-angle adjustments while safely locking instrument in place. Upgraded AGS yoke. Supports asymmetric guitar necks. Accommodates more guitar neck sizes from 40mm-52mm (1.57”-2.05”) incl. classic guitars. - The attached NINA (Narrow Instrument Neck Adjustment) are specially designed to increase the thickness of AGS arms. - Accommodates narrow neck instruments (like banjos and mandolins) and different neck sizes from min. 28mm(1.10”). - Attractive Wood Base. - Specially Formulated Rubber Foam fully protects instrument at all contact points. - Arm Length: 105 mm (4.1") - Load Capacity: 7 kg (15.4 lbs.)