| Name | Sirui K-40X |
| Type | Ball Head |
| Stiffness About Vertical Axis | 10621 +/- 60 Nm/rad |
| Stiffness About Radial Axis | 6399 +/- 61 Nm/rad |
| Retail Price | $167 |
| Weight | 1.68 lbs (0.762 kgs) |
| Manufacturer weight rating | 77 lbs (0.35kgs) |
| Maximum Height | 4.5 in (11.4 cm) |
| Base Diameter | 2.7 in (6.9 cm) |
| Ball Diameter | 54 mm |
| Tension Control | yes |
| Panning Lock | yes |
| Quick Release | Arca Clamp |