1. 0.5X Magnification Power. 
2. Working Distance: 165mm. 
3. Cutting magnification power by half and doubling working distance and field view of the microscopes.  
4. Mounting size: 1-7/8inch (48mm) in diameter. 
5. 0.5X Barlow lens doubles working distance and field view of SM and/or SW series stereo microscopes.