Features:
Easy to install
Alloy construction made it more durable
The heat dissipation ability is strong
Fine workmanship and perfect style
Shock-proof and high crush-resistant

Specifications:
Wheel Size: 1.0 inch
Material: Aluminum alloy&Brass
Quantity: 4PCS
Color: Purple rainbow
Thickness: 13.7mm/0.54in
Outer Diameter: 31mm/1.22in
Inner Diameter: 23.5mm/0.92in
Hexagon totation: 12mm
Axle Through Hole Dia.: 3mm
Weight: 26g/pc

Package List:
4PCS x 1.0 inch wheel hubs