Perfect refit accessories for your fixed gear bike! 

Features: 
Made of durable aluminium alloy. 
36 holes design. 
Suitable for fixed gear bike. 
Fully functioned for daily use or fancy movement tricks. 

Specifications: 
Material: Aluminium alloy 
Length: 140mm (Front)， 170mm (Rear) 
Weight: 273g / 9.6oz (Front)， 425g / 15oz (Rear) 

Package List: 
1 * Front Hub 
1 * Rear Hub