The SHEILD ROCK RX407 External Joiner Connector is the ideal choice for connecting and extending strut channels in a straight, longitudinal manner. This connector features a 4-hole design that wraps around the channel externally, providing additional fastening points that ensure maximum rigidity and prevent twisting at the joints. Manufactured with a length of 186 mm to fit 41x41 mm channels, it is perfect for use in complex metal structures, pipe support systems, and cable trays requiring long and stable extensions.