... Electric Bicycle Wheel Kit 1) Material: aluminium 2) Process: die casting 3) OEM drawings and samples are welcome Detailed Product Description ITEM Electric Bicycle ... ~55Mould featuresAdvanced design, Logical structure, High precision, Qualified materials, Long lifetime, ... , Machining, Surface Treatment, Packing.Surface treatmentHigh quality polishing, Chrome/nickek/Zinc(white, blue, ...