Seen these on 3c cues for years but up til now have never tried one. Bought a ADAM brand black on Ebay for 8.99 delivered. Just finished first outing with it and it is awesome. It lets you use a very light grip and still have full control of the cue. If you have a wrapless cue you ought to give one a try. ProBilliardShop was the vendor and they shipped real quick. The link to a "how to install" video was very helpful. Nice product.