These Forgefix Hammer Fixings include both plug and Pozi head screw. The plug is made from Nylon for a longer life and durability and the anti-rotation barbs prevent the plug from rotating in the hole.
The fixings are through fixing, eliminating the need for marking and re-positioning. To use, simply drill through both fixture and into the base material and tap in the Hammer Fixing with a strong blow to complete the fix and ensure full expansion. The screw can be released if required.