Hollow Wall Anchor Zinc Plated and Yellow PassivatedSuitable for fixing in Hollow block, hollow floor slab, hollow brick, plasterboard for applications such as bathroom fixtures, kitchen fixtures, shelving brackets, ceiling fixture.Pre-assembled cavity fixing - Locks into base material allowing removal & refit of fixture with demountable screwScrew size M5 x 45mmWall thickness 6-13mmMaximum fixture thickness 17mmHole Diameter 10mm