Series clamp, made of impact-resistant grey polyamide, halogen-free, cylinder head screw M4x... according to DIN EN ISO 1207 and sliding nut galvanised according to DIN EN ISO 4042 or DIN 50962 / DIN EN ISO 19598, for NIEDAX C-profile rails 2910, 2913, 2914 and 2920 with 11 mm slot width. for cable Ø: 13 - 38 mm