Our Underfloor Heating clip gun is perfect for installation of clips both 40mm and 60mm onto insulation boards such as Kingspan and Celotex. Specifically designed to improve fitter efficiency and comfort as well as speeding up installation. Clips are loaded into the gun and giving a comfortable standing position when fitting Ideal for use with our barbed pipe clips sold in our shop. Underfloor Heating Tacker Gun with clip options. Material : steel, aluminum For use with 40mm &60mm tacker staples.