A worm drive hose clamp with a 12mm wide band spanning 50mm to 70mm. The wider band matters at this diameter, spreading clamping force around a large silicone coupler instead of concentrating it in a narrow line, which is what causes couplers to be cut or to creep under pressure. It suits intercooler and intake joins on 50mm to 63mm pipework and large coolant hose connections. Make sure the clamp sits fully over the pipe’s bead or barb and that the band lies flat on a straight section. On genuinely high boost, consider whether a heavier clamp design is more appropriate than a worm drive.