Come and see our amazing products. This tamper-proof seal easily separates from each other, snaps easily, and self-locks with a double-click locking mechanism for added security. Polypropylene plastic material to show evidence of tampering. These seals are typically used on industrial and commercial doors on trucks, trailers and cargo containers that require tamper-resistant seals. Each seal is a single-use lock without any key. It cannot be opened once it is locked and cannot be reused once it is removed. Pls confirm with us about the packing info, stock color and exact production time before placing your order.