Features:

• Chisel 4.0mm Tip: Chisel tip helps deliver heat to solder joints greater than 4mm wide on PCBs and can also be used for general soldering tasks.
  
• Compatable with: WLBRK12
  
• Applications: Join wires (>8AWG), audio components, electrical, electronic repair, automotive, marine, hobby kits, and crafts.
  
• Toolless tip change: 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).

Details:

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.