KDH - Fastener for concrete,steel and wood. Nail with driven head,ideal for: up-and-over garage type doors, temporary wooden railings for building sites,wooden strips for roofing and stairs,KDH 20 STEEL FIXING for fastenings on steel, sundry metal fastenings on concrete and wood,metal guides for plaster board.KDC. Fastener for concrete and wood. KDH nail with driven head and large 47 mm Ø washer ideal for: Formwork,a single system for different wall and pillar thicknesses and sizes. The rough-surfaced material helps bonding with the concrete and is also invisible once the formwork has been removed. For fastening wooden strips for stairs and sundry fastenings on concrete and wood. KISL.Fastener in concrete of insulating material. KDH nail with driven head and wide,soft,flat washer of 30 and 60 mm Ø ideal for fastening insulation to roofs and walls without damaging the material fastened since the washer adapts to it.