Soldering tips 900series 1.) Used for KS-968, 936,937 soldering stations etc. 2.) Lead free 3.) work fast and efficienct Performance:1. High quality soldering tips ,have different size and different shapes.2. Tips shape: B,D,I,C,K,etc,.3. Different sizes: Ø4mm,Ø5mm,Ø6mm,Ø3mm,5mm hex,1/4" Hex etc,. 900 Series Soldering Tips