3/8″ X 2-1/4″ Concrete Anchor, 304 Stainless Wedge Anchor with Excellent Anti-Rust Performance, 304(18-8) Stainless Steel Concrete Anchors and Screws Kit (10pcs). Fastener Type: Standard, Wedge. 304(18-8) Stainless SteelLevanco wedge anchors are 100% 18-8 (304) Stainless Steel, with the highest corrosion resistance and durability.