1) High grade oxygen-free copper production? heat very fast. <br><br>2) The use of nano-layered technology plating? extra long life? up to 50?000-60?000 solder <br><br>3) Appearance polished? white chrome <br><br>4) Tip for lead-free soldering? life will be reduced? it is recommended that? subject to weld under the premise of? as far as possible the use of low temperature soldering? extend tip life <br><br>5) Tip after welding? surface oxide layer will appear? we recommend using special tools to remove? otherwise it will not eat Tin? tip do not eat Tin? 80% are your habits-related <br><br>6) Use: this product is applicable to heat outside the 40 watt soldering iron <br><br>7) 4-Piece Pack: Beak? Diagonal? 2 x Tip round