Regular Size  
  • Metal and thread is 5mm wide
  • Expandable from 2 - 5 inches in diameter
  • Circumference of approx. 8 - 10 inches when fully open

Large Size

  • Metal and thread is 7mm wide
  • Expandable from 2 - 5.5 inches in diameter
  • Circumference of approx. 10 - 12 inches when fully open