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 long tee key clamp allows for a 90° T connection between two tubes. Ideal for use in the joint between a top rail and a vertical post or as a top T joint on a guardrail/handrail. A tube can be passed totally through or it can join two tubes together.