Please be aware that orders placed after 12:00pm Eastern on Friday, May 26 will be shipped on Tuesday, May 30 due to the Memorial Day holiday.
Installing double expansion anchors can be completed in four easy steps. These light to heavy duty anchors can be used when working in concrete, brick and block base material, and can even be used in soft masonry and base materials of questionable strength. A machine threaded bolt is used to expand the Double Expansion Anchor and can be removed and replaced without affecting the holding values of the anchor. These anchors are available in 1/4", 5/16", 3/8", 1/2", 5/8" and 3/4" diameters and are made from a highly corrosive zinc-based alloy called Zamac.