If you are looking for a very' SOFT co-poly and a SPIN Monster...then this string is for you! RSI (Racquet Stringers Industry) rated the Quadro #1 in spin and #2 overall out of 157 strings they playtested. 

Quadro Twist has outstanding tension hold and is also highly recommended for the main or cross in a hybrid combination. If you've never played with a poly string then the Quadro is a great introduction for you to the poly world. 

Color: Black.
Length: 40ft/12m and 660ft/200m
Gauge: 16L (1.26mm)
Construction: Carbon Co-Polyester.
Advantage: Power combined with great spin and feel.