Each type is designed for a specific application. Among these types are Cast-In-Place, Drilled In, Friction, Clamping, Compression, Undercut and Bonded Anchors. The heavy duty Power-Boltâ¢ is a sleeve style undercut anchor which is vibration resistant and removable. It uses a regular grade 5 hex head bolt for strength. Available with a finished hex head or flat head with a hex key insert, they can be used in concrete, block, brick, or stone.