This is Chinese knock off of the original. It is overpriced and really poorly build. I paid for this 30 $ plus 20 $ shipping because I was having hard time finding the PSE roller glide. After 4 days of shooting both bearings popped out from the rollers. They were loosely installed and hold in place only by a small spring ring. Once you put it on your bow and start shooting the spring ring pops out with in few shots and then the bearing starts to slide side to side inside the roller causing the roller to get out of alignment and to rub against the actual guide. I will not recommend this product. It has been less then 2 weeks and one of the bearings already has develop a crunch inside proving that it is simply extremely low quality or competently the wrong size for the application. Don't waist time and money buy the original .