Features
【Size】-Aperture about: 23 mm.Height: 38mm/17mm.
【Material】- Made of high quality of soft plastic rubber.
【Feature】- Eye masks are made of rubber. Rubber is elastic. So in addition to looking at the inner diameter of the eye mask, you should also consider rubber that is elastic and can be stretched.
【Application】- It applies to eyepiece of the microscope and telescope and other lens, etc.
【Package】- Package inludes 2pcs rubber eyepiece cover guards.
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