Body ⌀ 4, 8 mm with extra-large head. Locking nail in inox. Lacquering by polyester powder. Expansion sleeve has an aluminium body and of a stainless steel nail. Set up is made with a hammer for the locking. Utilizations : Masonry fix, concrete, components, metal , wood, stones and generally solid materials Drilling with a front hole of diameter 6mm is necessary. When the expansion sleeve is set up, it can‘t to be removed.