Four required. Since 1987, all Edson Pedestals use the exclusive Edson Hex Head Aluminum Bolts. With this improvement they lock in place and require only one person to tighten them. They fit flush with the base and are made of aluminum, eliminating reaction from dissimilar metals.
Comes in 3", 4" or 6" hex head.
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Edson Bolts, Hex Head Pedestal Mounting 3" (76 1/5 mm)