Replacement Conical 0.3mm Tip for WLIBA4 Weller's Cordless Soldering Iron. The Conical Tip is easy to replace with the lever tool and is perfect for your electronic soldering tasks. The 4.5W AA battery-power enables you to solder anywhere, at any time, with cordless operation. With its 38 second heat-up and the ability to easily swap out batteries, it's perfect for your soldering tasks.