Product Information: The HERCULES Auto-Swivel/Adjustable Yoke Hanger GSP40B PLUS rotates to accommodate most guitars and pivots left or right so you can display the instrument facing various directions. It features a pegboard mounting system for display use. Specifications : The Upgraded Auto-Swivel AGS Yoke allows for multi-angle adjustments while safely locking instrument in place. It can accommodate a wider range of instrument neck sizes from 40 mm 52 mm (1.57 2.05) including classic, acoustic, electric and bass guitars. The attached NINA (Narrow Instrument Neck Adjustment) are specially designed to increase the thickness of AGS arms to accommodate narrow neck instruments from min. 28 mm (1.10) like banjos and mandolins. Pegboard mounting system. Technical Specs: Arm Length: 275 mm (10.8) Load Capacity: 7 kg (15.4 Ibs.)