1 BOX OF 20 SIMPSON STRONG-TIE TITEN HD 1/2" X 8" ANCHOR BOLTS NEW Simpson Titen HD mini screw anchors are self undercutting, non-expansion screw anchors that are designed to be quickly and easily installed. All Titen HD screw anchors feature a patented thread design with serrated cutting teeth for easy installation. Type 304 Stainless Steel is ideal for general exterior applications, where extreme corrosion resistance is not required Product Specifications Diameter: 1/2" Drill Bit Size: 1/2" Plain Length: 8" Manufacturer Simpson Strong-Tie Material: 304 Stainless Steel E-18