ToolsPro Wall Anchor Bolt Fastener Rust-Proof bolt for Concrete Walls (8mm, 12pcs)

No expansion forces – unlike plugs or anchors – you can place nearer the edge without risk of fracturing Eliminates line-up problems – drill the pilot hole direct into material and substrate, Suitable for a variety of substrates – concrete, solid, perforated, or hollow bricks, natural stone, marble, etc New easy fix – relief thread is easier to tighten especially at lower torque than traditional plugged fixings Cuts a thread into base material – because there is no need to insert the plugging quality self-tapping concrete anchors that cut a thread directly into pre-drilled pilot holes, no anchor or plug is needed. Self-tapping anchors are an excellent way to fasten a wide range of materials to masonry. Really easy to use. Just drill a pilot hole (see the technical information below for appropriate diameter) and use a socket wrench or spanner to tighten the screw, into concrete, natural stone, solid or perforated bricks, hollow blocks, etc. The anchor has a high low relief thread to aid the removal of dust and ease insertion. The threaded anchor and self-tapping action allow for safe anchorage, with the substrate becoming the nut to the bolt this utilizes a tried and tested method for metals and wood to a broader selection of materials. They can be reversed and reused in the same hole as it has cut the thread. Suitable for fixing timber battens/counter battening, window/door frames, machinery to the floor, wall plates, signs, etc. Brackets or handrails, ducting, satellite dishes, aerials, trunking, etc. In fact, anywhere a fixing to concrete or masonry is required.