... forever,no deformation,no cracking,shock resistance,wear-resisting Bike Rack Material:Aluminum alloy Characteristic:1.Rust resistan forevert,no ... deformation,no cracking,shock resistance,wear-resisting.2.Friendly-environmental,no environment pollution, acid and alkali resistance ... www.twjcic.com to get more information about us. Bike holder,Cast Aluminum bicycle frame,bike rack