Elcometer’s tough ¹/₄” (6mm) ID Twinline Control Hose prevents tangles and trip hazards compared to using single lines with the blast hose. Durable, reliable and lightweight the Elcometer Twinline Control Hose is constructed using spiral polyester with reinforced rubber. It is available with ¹/₄" (6mm) female swivel couplings to fit directly to your deadman’s handle and remote control valve outlet.