RUGGED AND DURABLE - SG TZH Lag screws made of high-quality 18-8(304)Stainless Steel，which has higher corrosion resistance and anti-rust effect than ordinary screws, longer service life, not easy to damage, more solid. EXQUISITE CRAFTSMANSHIP - This Lag Screws diameter: 1/2", length: 5inch, Wrench Size 3/4", excellent craftsmanship makes our Hex Head, fast, not easy to break, high strength, not easy to deform, not eccentric. Please check specfication by picture 2 PROJECT CENTER: These Stainless Steel 18-8 Lag screws are great for exterior household and industrial applications such as deck building or joining lumber. VALUE PACKAGING AND EASY TO USE - This Hex Head screws package contains 20Pcs, is not easy to slide during installation, and can be quickly and easily sinked. They are ideal for use at home, in the office or at work. INTIMATE SERVICE - SG TZH focus on customer satisfaction, if you have any questions or are not satisfied, you can contact us by email, we will solve all your problems as soon as possible.