Worm thread hose clamp, Steel bright galvanised (W1), Clamping range 105.0 - 130.0 mm, Belt width 20.0 mm. Worm-drive type. Extremely robust hose clamps for all applications where heavy loads occur and high forces are transmitted. Hexagon-head screw slotted, a/f 13, bright galvanised steel, passivated blue.