The MasonMate Loose Bolt Shield Anchors are for use in most types of masonry or concrete. Zinc plated for increased durability.Select Option M10 x 10mm (25)M10 x 25mm (25)M10 x 50mm (25)M10 x 75mm (25)M12 x 10mm (20)M12 x 25mm (20)M12 x 40mm (20)M12 x 60mm (20)M16 x 15mm (10)M6 x 10mm (50)M6 x 25mm (50)M6 x 40mm (50)M8 x 10mm (50)M8 x 25mm (50)M8 x 40mm (50) Add to Basket Quantity