Worked well as a replacement on my son's E-series. He it well and said it worked great.
Switched my strings to this RPM Blast. Could tell a huge difference in the spin of the ball, lost a little on control. But with practice it'll improve. Also found a bigger sweet spot.
Very satisfied with the 16g rpm blast my game improved after switching To this gut. Been using sonic pro 17g before and hit the ball always out . With the rpm blast i can hit the ball with spin more control in the base line thumbs up also at the Volley...
I've tried LOTS of different strings, and this one might be my favorite so far. A good balance of power and control, and good spin as well. Strung at 56 lbs. Power: 7/10 - It has some nice pop. Not as much power as Weiss Cannon Explosiv, but a moderate amount. Spin: 9/10 - The string feels slick, but the hexagonal shape gives it some bite on the ball. About as much spin as the Luxilon ALU rough. Control: 7/10 - Pretty good control, a good balance considering the power. Feel: 8/10 - I like the feel. It's not as stiff as the Luxilon ALU strings, so it has a softer feel.
No words to describe this string. It is the best poly string in the market, the feeling is amazing, the spin is incredible. I also try the dual string but I think this is superior.
The feeling you get off of the RPM Blast strings are amazing. Top of the line comfort and spin. No wonder why Rafa uses this string. Simply awesome. Definitely going to have to buy more in the future!