Sleeve anchors are dependable for use in brick, cinder block, thin wall, marble, and concrete. One benefit is that the base material doesn't have to be solid. Like the wedge anchor, the sleeve anchor's diameter and the hole size are the same, simplifying installation. The variety of head styles offers extra versatility, and this pre-assembled anchor is extremely fast and easy to use. An added benefit is the ability to remove this anchor after installation. Sleeve anchors are used for anchoring window and door frames, thresholds, cabinets, theater seats, duct straps, dock bumpers, aluminum and steel angles, steel columns, etc.