Lead Free Hakko Soldering Tip T-18 series 1.) Used for Hakko soldering station 2.) work fast and efficient 3.) Long use life Performance:1. High quality soldering tips ,have different size and different shapes,Mainly for soldering station 951.2. Tips shape: B,D,I,C,K,etc,.3. Different sizes: Ø4mm,Ø5mm,Ø6mm,Ø3mm,5mm hex,1/4" Hex etc,. 900 series 200 series Hakko T-18 Series Soldering Tip