Hi-Torque Strength   Clamp With Single Bolt
      
        
        
         Material : 
         W1-- All galvanized steel.
         W2-- AISI 430/300 series Stainless steel except the   Galvanized screw and shaft.
         W4-- Al l part s AISI 300 series Stainless   steel.
         W5-- All parts AISI 316 Stainless steel .