Specs for Wilson Ultra 100 Countervail Black
| Strung weight | 11.2oz / 317.51g |
| Balance | 4 pts Head Light |
| Head size | 100 sq. in. / 645.16 sq. cm. |
| Stiffness | Very high - 95% (74 RA) |
| Recommended tension | 50-60 pounds |
| Swing weight | 320 kg · cm2 |
| String pattern | 16 Mains / 19 Crosses Mains skip: 8T,8H One Piece No Shared Holes |
| Length | 27in / 68.58cm |
| Beam width | 23mm / 26.5mm / 22.5mm / |
| Composition | Countervail/Carbon Fiber Graphite |
| Power level | Low-Medium |
| Stroke style | Medium-Full |
| Swing speed | Medium-Fast |
| Colors | Black |
| Grip type | Wilson Sublime |