For pricechoose optionsSelect Option M10 x 45mm (50) M10 x 55mm (50) M10 x 80mm (50) M12 x 100mm (25) M12 x 65mm (50) M12 x 80mm (25) M16 x 120mm (10) M16 x 75mm (25) M8 x 45mm (100) M8 x 70mm (50) M8 x 90mm (50) Quantity Add to Basket The MasonMate Hex Loose Bolt Sleeve Anchors are for use in most types of masonry or concrete. Zinc Plated for increased durability.