The Ramset™ RamPlug™ Nylon Frame Anchor is a light-duty, rotation setting, interference fit anchor designed for use in a variety of substrates, such as: concrete, stone, solid brick, hollow brick, solid block, hollow block, hollow slab block and lightweight concrete (AAC) block. Available in Standard, Long and Ultra Long, with (Ultra Long only) or without a countersunk or hex head screw, there's a RamPlug™ for a range of light-duty anchoring applications.