Come and see our amazing products. This USB drives is made of Zinc alloy with integrated packing black glue chip, and have different capacity for choice of 32MB/64MB/128MB/256MB/512MB/ 1GB/2GB/4GB/8GB/16GB/32GB/64GB/128GB. This price is based on 4GB, if you want other capacity please feel free to contact us for get more info. Pls confirm with us about the packing info, stock color and exact production time before placing your order.