Fits any base material solid or hollow, anti rotation features. Truly universal plug which fixes into any base material, solid or hollow Unique geometry guarantees maximum expansion and grip. Recommended for unknown substrates and exploited holes Anti-rotation features prevent spinning in the hole 100% assurance of proper anchoring derived from unique split design of the plug Lip prevents plug slipping into over-sized holes. This pack of 80 plastic wall plugs from Rawlplug are suitable for a variety of DIY applications including concrete, masonry, stone, blockwork, plasterboard and tiled walls.