Elumen8 CLAM206 Inline Internal Joint Key Clamp (150-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 inline internal sleeve key clamp provides a secure joint when connecting two tubes of the same diameter with a max. wall thickness of 3.2mm. 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 include For use with 3.2mm max. tube wall thickness