Hollow Wall Drywall Anchor Expansion Bolt Set 6mm / 8mm Carbon Steel | 10–100 Sets | Tile Plasterboard FixingHollow Wall Drywall Anchor Expansion Bolt Set 6mm 8mm Carbon Steel 10100 Sets Reliable fixings for hollow walls, plasterboard, gypsum board, and tile where standard wall plugs fail. These carbon steel expansion bolt sets are engineered for cavity wall applications the expansion tube collapses and grips the back face of the board as the screw is tightened, distributing the load across a wide area and providing a secure anchor even where there is no