Diameter Inner Diameter: 8mm Upper Shocking Proof Lower Shocking Proof Hardness: 8mm   Tip： Clean the bearings after riding in the rain or over a puddle This is not necessary to clean it frequently, but you may need to check...

Diameter 25mm Upper Shocking Proof Lower Shocking Proof Hardness Tips: Data of top speed, range, and hill-climbing are based on a rider weighing 155 lbs traveling across the downtown floor and could be impacted by riding style, weight, terrain, and...

Diameter: 25mm Upper Shocking Proof: 14mm Lower Shocking Proof: 16mm Hardness: 90A