The SPORT is Number One Laboratory's compact version of the Model D with the same shaft and head.
The small balls on the SPORT eliminate much of the bulk of a standard STP. The SPORT also has a shorter and less bulky receptacle cup which may take a little more practice for some.
The SPORT has a powder-soft finish. The outer silicone 'skin' has a clean, soft matte texture. Designed to help reduce chafing and remove tacky silicone feel.
- Shaft Length: 4" - 10.1 cm.
- Width: 1.25" - 3.2 cm.
- Height (from below balls to top of shaft): 3.5" - 8.9 cm