An inexpensive way of securing truck shipments using these Trans metal trailer seals. Safeguard truck shipments against pilfering or tampering with these select Trans metal seals. Simply insert the end into the locking head-no sealing tool necessary. Seals are .0095″ thick, s they fit through extremely thin slots. Fixed length with round head design. This 8 1/2″L Round-Head Seal contains a double-spring ring design that cannot be resealed once opened. Seals are made of tin-plated steel. Embossed with seven random numbers for convenient identification. Trans metal offer very flexible way of protection to the protection seeker because t can be used for all different types of carriers and also they are reusable which means they can be reused over a time period. This reliable trailer seal is available in different metal combination which acquires the properties of both the metal that are used in the manufacture.