Diadem Flash 17 is a round-shaped co-poly from Diadem. Good power and comfort with this one. Diadem strings also hold tension very well.
Diadem Flash 17 is a great option for players looking to get good control on their strokes, but without using a string that is overly stiff and might end up hurting your elbow or wrist.
Gauge: 1.20 mm
Player type: Intermediate to advanced
Read my review of Diadem Solstice Pro, their most famous string.