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Rubber Eyecup for PVS-7 PVS-14 6015 Anvis AVS-9 Night Vision Device Mil-Spec - KD Sporting Group
Agena Eyepiece Eye Guard: ID = 1.57" (40mm), Rubber, Black, For Some 2" Eyepiece Eyepieces # EG04
Canon YB2-0077 Right Eyecup Rubber IS Binocular | USCamera
Amazon.com: Heayzoki Soft Rubber Eyepiece Eye Shield, 27mm/1.06in Inner Diameter Rubber Eyecups for 42-48mm/1.65-1.89in Lens, Suitable for Microscope Eyepieces, Monoculars and Binoculars : Electronics
One Pair Binoculars Rubber Eye Cups Eye Guards Caps Inner Diameter 40 mm for Microscope Eyepiece Telescopes Eyecups - AliExpress
2pcs Eye Cups Replacement Eyecups for Binoculars | eBay
Stereo Microscope Eyepiece Cover Guard | Eyepiece Eye Cup Rubber Microscope - Microscope Parts & Accessories - Aliexpress