Replacement Chisel 2.0mm Tip for WLIBAK8 Weller's Cordless Soldering Iron. The Chisel Tip is easy to replace with the lever tool and is perfect for your electronic soldering tasks. The 8W 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.