OVERVIEW
Hard plastic case provide a safe and convenient method for transporting and storing your  calibration cylinders. Models:
  • 500A - Holds four (4) 17 or 34 liter cylinders
  • 500B - Holds one (1) 58/103 liter cylinder and two (2) 17/34 liter cylinders
  • 500C - Holds three (3) 58/103 liter cylinders
  • 500D - Holds two (2) 17 liter or 34 liter cylinders
  • 505 - Holds two (2) 58/103 liter cylinders