Specs:

• Size: 200*50mm （8*2inch）
• Maximum inflation pressure is 50psi. The recommended inflation pressure is 38psi.
• Hub: Precision machined aluminum alloy, anodized
• Suitable for non-paved roads and roads in poor condition
• Complete wheels / hubs with bearings ( 3201 series bearings for 12mm axle)

Adapts to other boards / drives:

• The effective length of axle (12mm diameter) should be at least 34mm
• Fits most 8" tires (200x50) & 7" tires (175x50)  &  6" tires (150x50) 
• If you need technical drawing or more details , please email us