17" alloy frame 26" wheel factory price 5000pcs production ... 103mmchainringalloy46T*1/8", CNCcrankalloy170mm, square hole, 5 arms, with alan key bolt coverbrake nill freewheel steel, 1/2 ... pedal, axle 9/16", with metal toe-clipWarranty periodOnly use this bicycle in accordance with the user manual, we offer ... a limited warranty of the following items:1. The main frame ...