Roof fastener with 3x vertically adjustable base plate (40,47,54 mm) and long bracket. For rafters from 48 mm (narrow rafters from 36 mm possible with M6 wood construction screw). With pre-assembled K2 Climber 36/50 and allen bolt. Used for fixation on the K2 mounting rail type K2 SingleRail and CrossRail. Material: Aluminium EN AW-6063 T66; Stainless steel A2