This is a brand new 1X Barlow (auxiliary objective) lens for SM and/or SW series stereo microscopes. It comes with a 1-7/8" (48mm) mounting thread and goes with SM and SW series stereo microscopes. It can be used to protect microscope objective lenses.

Key Features:

• 1X protection Barlow lens for SM and/or SW series stereo microscopes, protecting objectives of SM and SW series stereo microscopes.
  
• Mounting size: 1-7/8" (48mm) in diameter.
  
• It can be used to protect microscope objective lenses.