RadioShack Replacement Desoldering Tip for Cat. 6402060$1.99PriceOut of Stock Replace the tip on your 45-Watt Desoldering IronTip Hole Diameter 0.055in (1.4mm)Tip Length 0.23in (5.9mm)Material Copper with Nickel PlatingPower Rating 45W UPC 040293142889.