hose clamp with worm gear drive, 12 mm band width

for attachment of smooth hoses

other versions

properties:: - made acc. to DIN 3017; - hexagon head at the screw, wrench size 7 mm; - tighting range 210 - 230 mm and bigger made at least two clamps; - all sizes and qualities are one stock usually
versions:: W1: - zinc plated steel or somthing like that; - limited corrosion resistance; W2: - band and lock made by chrome-steel; - screw made by coated steel; - increased corrosion resistance; W4: - made by stainless steel (X5CrNi1810) or something like that; - good corrosion resistance