Yuauy 3 Kinds 7 pcs Bicycle Sleeve Bearings Cycling Absorber Bearings Washer Bushing Rear Shock Bushing O-Ring Copper Composite Plastic Steel + 2 pcs O-Rings

["There are there kinds of bike sleeves in one set to meet your different requirements","Material: They are made of high quality different material such as composite material and steel","They are design to provide a smoothy riding experience for you, The designs of them are special and easy to install","Size: 12.7 x 15 x 12.7mm, 14 x 12 x 14mm, 12 x 15 x 8mm","Package included: 1 x Silver 12.7 x 15 x 12.7mm Sleeves + 2 x Copper 12.7 x 15 x 12.7mm Sleeves + 2 x Copper 14 x 12 x 14mm Sleeves + 1 pairs of 12 x 15 x 8mm Composite Plastic Sleeves + 2 x O-Rings"]