Fixe Wedge Bolts Are Designed For Rock Climbing. Fixe Uses (A 304) Stainless Steel Rod Stock To Manufacture Wedge Bolts. The Threads Are Stamped, Not Milled, To Ensure The Highest Possible Strength. All Stainless Steel Models Include A Stainless Nut, Washer And Rubber Washer. Double Wedge Bolts Have Two Expansion Points.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }