This is a skateboard bracket set, and it has a good shockproof function, which can give you professional skateboarding experience. And these devices your skateboard more stable and safe, and you can have relaxing skateboarding playing. Features -Color:Black -Material:PU -Size:1.80X1.80X1.50cm/0.71X0.71X0.59in -Note: including 3 different sizes in 12mm/0.47inch, 16mm/0.63inch, 18mm/0.71inch. -These products will keep your skateboard riding nice and smooth and fit most skateboard trucks. -Choose of PU material, resistant and wear resistant, which is not easy to damage. -An essential shocking absorber tools for your skateboard, which can give you stable and safe sliding. -These products can be used as to send to your friends who sports. -Fine craftsmanship and smooth edges, these products will not hurt your hands. Package list: 12 x Truck Replacements