Reduces string movement. Prolongs life of string. Plastic cross pieces insert in seconds with TournaCross tool. Will increase spin and improve ball control. Pros use it, including Sampras.
A friend recommended the Tournacross product to keep my strings from shifting and to increase string life. Typically, I strings break rapidly. I was worried the stays would be difficult to apply, but that was not correct. And there are instructions on YouTube. I have installed these string stays on all 4 rackets and I love them. I will never stop using them. I recommend to everybody.
BruceB
August 16, 2015
Keeps your strings straighter!
This shopper rated the product 4 out of 5 stars
Tried this type of thing 30 years ago with some success. Have had problems with strings bending because of hitting topspin... and having to straighten them between points much too often. Remembered these and ordered for the first time in decades... they work pretty well! I put them on each of the mains for about the middle 5 strings, skipping every other cross string. Then every other toward the outside mains... They don't keep the strings from moving completely, but far less wandering than before. Also seems to tighten the strings by a couple pounds having them in. I would buy these again.