characteristic: 
 TN engineering plastic, durable 
 ABEC 9 wheel bearings for wheeled skateboards 
 
 Material: TN engineering plastic 
 color: red 
 Quantity: 10 pieces 
 Weight: 115g 
 Inner diameter: 8mm 
 Outer diameter: 22mm 
 Thickness: 7mm 
 
 Package Contents: 
 10 x wheel bearings