High Quality Pair of Stainless Steel Plated 3.5 x 3.5 in with 1/4 in radius. Includes matching screws, 3 holes as shown, gauge .085 inch (2.2MM). Typical use: 1 1/4 inch to 1 1/2 inch thick doors. 304 Stainless Steel is highly rust resistant to withstand the elements.