YTEX
Square-X Sharp Set
Square-X Sharp Set
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We selected our popular SQUARE-X string to introduce our first 18g but be careful… this one has an evil bite to it!
The SHARP is our square-shaped string but designed to be thinner with super sharp edges. I can tell you now, that this string will be a nightmare for stringers but a DREAM for players!

This string is a very soft co-polyester and easy on the arm like most of our co-polys.
The SHARP gets an A+ in most departments, effortless power; incredible feel; control, and that “wicked” spin. Obviously, with its sharp edges and being a thin 18g, it’s not your most durable co-poly from our line.
The SHARP is ideal for those players looking to get what feels like “an illegal advantage” when it comes to spin.
If you’ve never played with polyester strings and are not a chronic string breaker, then this is the ideal string to make an easy transition into the world of polyester strings.
Color: Lime Green.
Length: 40ft/12m and 660ft/200m
Gauge: 18 (1.15mm)
Construction: Carbon Co-Polyester
Advantage: Control; Feel and Spin

Great spin and soft on the arm. Great feel
Lime string that pops well and full of spin. Adds alot to a fast heavy spin serve and even a flat serve.
Another of my favorite strings from YTEX. Just has so much bite that it gives my one handed back hand Stan The Man vibes that I opponent’s stop targeting my backhand side during match play. Also great to use in a blend with HexagonX red at the crosses and this in the mains.
I did love them so much that after the first set a did buy a full reel!
Square-X Sharp has to be the most spinniest control string I've ever used amazing! If you looking for control and spin this is the string with power you can't go wrong especially if you mix with hybrid with another poly!! Just try one set and you will find yourself buying a reel!!
The lines on the tennis balls in the picture are from the extreme bite from Square X Sharp in the mains of my RF97. I'm a hard hitting 4.5 and use Ytex Square X Sharp in the mains and either MSV Swift or Isospeed Cream in the crosses. It's a great combo. The Square X Sharp gives great spin, feel, power, and control. The round slick coated cross strings add durability and help with tension maintenance, while providing great snapback to help with the spin. Love Ytex and am glad to have found Square X Sharp!
My 1st time using 18g and will not use anything else. I feel that I definitely have more "pop" without any control loss.
I ordered more strings after my 1st time using them.
I use them in a hybrid setup wit natural gut and love the spin and feel.