The Window & Door Jamb Anchor is ideal for situations involving new construction, rehab, and remodeling where framing is complete or existing. It can be uses in window or door jambs as a temporary, and reusable anchor point as part of your personal fall arrest system.Material: Main Body: Aluminum Alloy, Stainless Steel Set Screw, Plastic Set Screw Handle, Composite Rubber Set Screw and Jamming Frame Cushions, Stainless Steel O-ring, Stainless Steel w/ Plastic Handle Detent Retaining Pin