Walker Duo-Pro tape is the first differential tape designed exclusively for hair extensions. One side is optimized for hair adhesion and the other is designed to bond to the hair extension. This allows for stronger and more secure hold with the quickest cleanup on the market. Duo-Pro is a game changer and will make the hair extension experience so much easier for both you and your clients. This is a 3/8″ x 6 yd. Roll of Duo-Pro hair extension tape.