Series clamp, with cylinder head screw M 4 and sliding nut, for fastening to C-profile rail with 11 mm slot width, halogen-free. for C-profile rail: 2761/2 Dimensions (approx. dimensions) H x W x L: 33 x 16 x 16 mm for cable Ø: 6 - 38 mm Material: PS (polystyrene) Color: light gray RAL: 7035 (similar)