Mikey or anyone in the know... what are the ball sets used on the TV show? They look like centennials, but have 4 darts instead of 2. Furthermore, some of the sets are mixed up, having some balls with 2 darts, and some with 4. Below are two screenshots from the show. Just curious, I've never seen balls like these before. Thanks.
The 6 has 2 darts, all the others have 4 in this picture.
The 1 has 2 darts, all the other visible balls have 4 in this picture.
The 6 has 2 darts, all the others have 4 in this picture.
The 1 has 2 darts, all the other visible balls have 4 in this picture.