Quick tool-free blade replacement system Top-quality, "made in Solingen", stainless steel blades with PTFE coating Application area: For laying underfloor heating. For installation of all domestic pressurised water areas (plastic pipes are becoming more common for this than steel and copper pipes). For all pipework installation in house construction, industry, gardening and agriculture. For laying empty conduits in house construction. For laying irrigation pipes in agriculture and gardening.