Triple-column clamps, with pressure and double counter-tray, including zinc-nickel coated M 8 stud screw, for proper laying of single-core cables in the bundle. for C-profile rails with slot width: 18 - 22 mm Dimensions (approx. dimensions) for cable Ø: 32 - 36 mm Material of bracket and holding plate: steel, hot-dip galvanized in accordance with DIN EN ISO 1461 Material of pressure and double counter pan: PP (polypropylene), halogen-free, light grey similar to RAL 7035 Material of pan insert: steel, strip galvanized in accordance with DIN EN 10346