Discover the MasonMate M12 Loose Bolt Shield Anchors, the ultimate fastening solution designed for secure applications in masonry and concrete. This pack of 20 high-quality anchors is engineered for exceptional strength and durability, making it perfect for both professional contractors and DIY enthusiasts. Each anchor features a size of M12, with an anchor hole size of 20mm and a shield length of 75mm, ensuring versatility for various projects. The anchors accommodate bolt lengths of up to 90mm and require a minimum hole depth of 85mm, providing a robust fastening solution. With a thread diameter of 12mm and a maximum fastening capability of 10mm, these anchors are crafted with zinc plating to enhance corrosion resistance, making them ideal for indoor and outdoor use. Choose MasonMate Loose Bolt Shield Anchors for a reliable and long-lasting hold in any environment.