German type hose clamp

bandwidth are 9mm and 12mm two types

according the material  has two kinds thickness.carbon steel's 0.8mm,stainless steel's 0.6mm

It has lower free torque 0.8NM, and higher break torque, 5-5.5NM.Smooth running is feature

The smallest size of German type clamp is 6-10mm

Regarding the material, it can be divided into the following four types:

W1-- all of the housing, screw and band are silvery or golden color galvanized steel;

W2-- screw is galvanized steel, other parts are 300ss(201ss) stainless steel;

W4-- all of the three parts are 300ss(201ss) stainless steel