Formula brake ware is pushed to bicycle

Formula brake ware is pushed to bicycle stops tie -bar pole and a brake including brake block position limiting clamp, two fan -shaped brake blocks, one and acts as go -between, its characterized in that: the brake block position limiting clamp fan -shaped spacing piece and is formed by the sectorial down fan -shaped spacing piece of a slice and a slice are sectorial, and lower fan -shaped spacing piece and last two fan -shaped side fixed connection spacing fan -shaped are in the same place, makes two fan -shaped distances between spacing appear the limit from fan -shaped big arc limit to fan -shaped minor arc and reduces gradually, two fan -shaped brake blocks of installation in the brake block position limiting clamp, two fan -shaped brake blocks be fan -shaped form, and the fan -shaped emissions of the fan -shaped emission of two fan -shaped brake blocks and two fan -shaped spacing pieces are unanimously, are the brake discs between two fan -shaped brake blocks, and the downside fixed mounting of lower fan -shaped brake block has three lower roller bearings that the thickness is different, and the fan -shaped big arc limit of the diameter of three lower roller bearings fan -shaped brake block under from appears the limit to fan -shaped minor arc and reduces in proper order.