The ForgeFix TechFast Masonry CSK Screw is a self-tapping, no stress alternative to plastic plugs. With an easy 2-step installation: drill a hole in substrate and screw in with power tool. These screws have a countersunk head with TORX® compatible recess. Protected by an Elementech coating, fire and corrosion resistant. Salt spray tested to 1,000 hours. Complies with EU Safety, Health and Environmental requirements. Supplied with a T20 Impact Bit.