The HERCULES Z-Style Keyboard Stand KS410B is the KS400B with an additional adjustable EZ-LOK Tier for an added keyboard.
 
Model: KS410B
  SPECIFICATIONS
| Base Z stand Height | 
605 mm - 930 mm (23.8" - 36.6") | 
| Base Z Width | 
510 mm - 850 mm (20" - 33.5") | 
| Base Z Support depth | 
450 mm (17.7") | 
| Upper Tier Height | 
240 mm - 430 mm (9.4" - 16.9" | 
| Upper Tier Depth | 
400 mm (15.7") | 
| Load Capacity | 
130 kg (286 lbs.) | 
| Folded Size | 
705 mm x 605 mm x 175 mm (27.7" x 23.8" x 6.9") | 
| Upper Tier Angle | 
70°, 90° | 
| Upper Tier Load capacity | 
40 kg (88 lbs.) |