Description Forgefix Aercrete square anchors are quick and easy to install, with no specialist tools required as they can be hammered directly into ACC blocks. The patented leg design gives them excellent pull-out tolerances and they can accept screw sizes 3.5-5.0mm, 6-10 gauge. Popular for fixing light to medium weight fixtures and fittings. Manufactured from 100% reinforced nylon. Supplied in a bag of 10.