The Dunlop Black Widow is a heptagonal shaped mono-filament polyester string that provides excellent bite on the ball. The Dunlop Black Widow is a low-powered string which allows players to swing big while maintaining control and accuracy. The high-tensile copolymer construction make the Black Widow a durable string as well. The Dunlop Black Widow is designed for baseline players who like to dictate points with spin and lethal accuracy.