Elumen8 CLAM209 Horizontal Railing Base Key Clamp (145-HDG). Key clamps are designed to secure and connect 48.3mmØ tubes quickly and easily. The wide range of options available enables users to create a huge variety of configurations including lighting grids studio frames staging and exhibitions stands. The horizontal railing base key clamp provides a base to support vertical posts that need to be secured to the wall with suitable fixings. Malleable cast iron construction with hot dip galvanised finish Designed to fit 48.3mmØ tubes Simply secured via an Allen key (not included) Please note: Not suitable for use in the construction of scaffolding frameworks Grub screws included