60mm Tacker Clips are used to fasten underfloor heating pipes to the insulation layer. The clips can be used in conjunction with pipes of widths varying from 14 – 20mm. The clips are fixed in 25 piece cartridges via an adhesive paper strip. These clips are designed to work in conjunction with a tacker gun. TECHNICAL SPECIFICATIONS: Pipe size: Up to 20mm Width: 20mm Height: 60mm.