Here's what Hercules say about the Upgraded Auto System guitar hanger:
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.
- The Upgraded Auto-Swivel Yoke with Auto Grip System allows for multi-angle adjustments while safely locking instrument in place.
- Accommodates more guitar neck sizes from 40 mm – 52 mm (1.57 in - 2.05 in) including classical guitars.
- The attached NINA™(Narrow Instrument Neck Adjustment) are specially designed to increase the thickness of AGS arms.
- Accommodates narrow neck instruments (like ukuleles, banjos and mandolins) and holds instrument neck sizes as narrow as 28mm(1.10 in).