Durable, adds spin and inexpensive.

This poly is great for heavy spin and control. Seems to bite into the ball, giving it a lot of action. Holds tension well and has good feel.

When you hit with Black 7, you can hear the ball singing "You spin me right round baby like a record player round-round." Yes, it is a stiff rigged string but when blend with another string stiffness is minimized. Shots that are normally out are close enough to make your opponent hang their head and curse beneath their breath. Drop shots and slices go over the net to illicit pure frustration to the waiting player. Black 7 - It's like vegetables - they're good for you, but they taste better with dressing, and they make you play better.

Spin string similar to the higher priced offerings. Plays and wears about the same so this is a good value.

This string has very good bite on the ball when hitting for topspin. The string is also comfortable. I'm recovering from a bad case of tennis elbow and this string doesn't hurt my arm.

I was looking for a string that gave me a little more bite on the ball for spin. I have been playing with this fore about 6 Mo. and this is the one for me and its durable, haven't shredded a set yet.