Manual Wrench is made of Forged Aluminun and make the anodizing to prevent them from being Oxidation and Corrosion. it is very light and easily to handle the coupling connecting mutually
Manual Wrench Profile
2. Size : 4'',6'',8'',10'',12'',14'' or Customizaton.
3. How to use : see the following picture
Prodedure 1 procedure 2