Dif-Pads are friction devices by Frank Difeo. They will fit on almost everything that can take a Duncan sticker, but these will out-last the Duncan sticker by orders of magnitude. A little more per sticker, but a lot more in the life of the pad. This price is per sticker. These stickers come standard on a lot of yo-yos including many HSpin, Kyo and Anti-Yo Yo-Yos.