The Single is am chine bolt anchor designed for use in concrete and may  be suitable in block, brick and stone base materials. The anchor consists of pre-assembled set of expansion shields and an expander cone formed from Zamac Alloy.

The Lag Shield is a screw style anchor designed for use with lag bolts. It is suitable for use in concrete andthe mortar joints of block or brick walls. Lag Shield anchors are formed from Zamac alloy. In harder masonry materials, short style Lag Shields are used to reduce drilling time. The long style version is used in soft or weak masonry to engage more base materials.