1/2 x 4 Mushroom Spike Zinc Plated (25)
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1/2 x 4 Mushroom Spike Zinc Plated (25) . The Spike® anchor is a patented, one-piece, tamper-proof, vibration resistant anchor for use in concrete, block, brick or stone. Several head styles and anchor materials are available. The Spike® anchor is formed with an "s" shaped configuration at the working end of the anchor to create an expansion mechanism. Since the anchor is pre-expanded, there is no secondary tightening operation required which greatly reduces the overall cost of an anchor installation.
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