Bike Bell: Cheapest in the market.JIS,VIA,EN-71,PAH(PAK),HEAVY MEATAL TEST High quality, reasonable price Bike bell1.Steel top with plastic base and lever2.Operation: knocking3.Diameter:54mm, 58mm4.Chippest in the market. 1.Material:Steel and Plastice 2.Color:any color 3.Certificate:EN-71,PAHS,CE 4.OEM accepted 5.High quality and best price