1 Weaving Thread 1 Needle. Sewing needle and thread are the tools you will need to create and sew your Weft hair extensions to your Tracks or Beaded RowsSewing thread is made specifically for weaving hair extensions to your hair as you will notice It is thicker than regular sewing thread and is strong enough to handle the weight of extensions of any length for months. Choose the colour which most closely matches your natural hair roots this way, the root of you hair and the extensions will be a perfect match which then creates a beautiful result.