16 Inches Flat-Tip Hair Extension Colour Blonde # 613 . Hair Extension Cadenza Fusion HairsCadenza Fusion Hairs are made with High-quality Italian glue in hair extension with tips, U tips, flat tips, and v tips. These Tip hair extensions can be used for both hot glue and cold micro bead installations. Cadenza Fusion Hair Extensions are the safest kind of hair extensions to add length and volume to your hair.