The ET-HL-1 is a precision soldering tip manufactured by Apex Tool Group for use with the WEL.LR-21 soldering iron, compatible with lead-free solder alloys. The tip is a combination chisel and conical shape with a 0.8 x 0.4mm tip for more precise soldering. The Quality Assurance process for the ET-HL-1 includes a "grip and twist" test to ensure that the tip has the same dimensions and shape after use. The advanced soldering tip is designed to give a cleaner and more efficient work with your soldering iron.