Diadem Solstice Power is a firm co-poly featuring a six-pointed star shape that helps to enhance ball bite for massive spin and power. The low-friction surface further enhances ball spin by improving string snap back. In other words, this string was built for spin – massive spin. Intermediate and advanced players looking for a huge spin and blistering power from their co-poly have come to the right place. Firm polyester 6 sided star shaped design Enhanced spin and ball bite