Size: 1-5/16"-2-1/4". Heavy Duty clamps are recommended for use on large diameter applications such as turbo exhaust sleeves, coolant hoses and intake systems. A bellevile spring mechanism permits the Constant Torque® Clamp to automatically increase or decrease its own diameter due to changes in operational or environmental temperatures.

• Slotted 5/16" hex head screw for versatile and easy installation.
  
• Energy store in compressed belleville spring mechanism controls automatic clamp adjustment.
  
• 5/8" band with internal liner.
  
• Torque indicator permits visual assurance that the clamp is properly installed.
  
• Heavy Duty four piece "Quadra-Lock" construction for extra strength and torque conversion.