• The material in cast aluminium makes the holdfast light and resistant
• Hercules iron and stainless steel clamps can replace aluminium clamps for works at higher pressure or to resist to high temperature
• The weight of the steel clamps is kept down by the pierced body; all the mobile parts are made by stainless steel.
  
• The safety blocking system permits pieces to be held tightly.
  

• The pressure of the holdfast can be regulated by means of the adjusting screw.
  
• The holdfast’s pivots rotate on tempered bushes.
  
• Each component can be replaced by another technically equivalent one.

The new stainless steel series is extra-stong in clamping and it is indestructible.