Features:
Easy installation.
100mm working-distence, prevent dust getting in it.
48mm mounting size, fit for SM-series stereo s.
Doubles working distance and field view of for SM-series stereo s.
Quality aluminum material, rustproof and corrosion-resistant, has long service life.

Specifications:
Aluminum Alloy
Inner Diameter: Approx. 4.8cm/1.89in
Height: Approx. 1.5cm/0.59in
Mounting Size: 1-7/8" (48mm) in Diameter

Note:
Please allow 1-2cm errors due to manual measurement, make sure that you do not mind order.
Due to the difference between different monitors, the picture may not reflect the actual color of the item.

Package includes:
1x Barlow Lens