The cast aluminum road stud is divided into the full cast aluminum and the cast aluminum shell. The full aluminum is that the shell of it is made of metal. The compress strength of it is relatively high. It is generally used for double yellow line, and commonly known as full aluminum spike. The cast aluminum shell refers that the shell of it is cast aluminum,
The internal of that is filling. The cost of such a spike is lower than the full cast aluminum. But simultaneously the compress strength of it is not so high. It is commonly known as cast aluminum spikes or cast aluminum filled spikes.
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