Replacement chisel 4.0mm tip for WLBRK12 Weller's cordless rechargeable soldering iron. The chisel tip is easy to replace without a tool and is perfect for your electronic soldering tasks. Solder on-the-go with Weller's cordless rechargeable soldering iron. 12W lithium-ion battery enables you to use it while recharging for continuous operation. With its 45 second heat-up, full range of tips, LED light, auto shut off, and integrated safety rest, it's perfect for your soldering tasks. Chisel tip helps deliver heat to solder joints greater than 4mm wide on PCBs and can also be used for general soldering tasks. includes join wires (>8AWG), audio components, electrical, electronic repair, automotive, marine, hobby kits, and crafts. Tip is easy to change by pulling the old tip off and pushing new tip on (turn off soldering iron and allow tip to cool before removal).Chisel 4.0mm tipCompatible with WLBRK12Toolless tip changeTip/Nozzle Width: 4mmTip/Nozzle Style: ChiselUse With: Weller WLBRK12 Soldering Hand PiecesWLT Series.