Inclusions on the barrel to add style and grip to the dart.
Dimples can range from extremely small to deep and wide providing a large range of grip and style. As dimples become larger they become more oval shaped due to the cylindrical nature of a dart barrel.
Similar to axial grooving dimples can help provide radial positioning of your finger on the dart.
Dimples are an excellent option for a functional location to constantly indicate your front finger on your barrel without adding a significant amount of grip that could snag your finger.
You can place dimples in rows along or around the barrel, helixes around the barrel, or randomly wherever you chose. The possibilities are endless.