Reddit reviews Vortex Optics Defender Flip Cap Set - Eyepiece E-10 (41.5-46mm) & Objective Lens Cover O-40 (45.5-48.5 mm)

Virtually indestructible, the Defender flip caps are the most versatile and durable on the market, these are the last flip caps you'll ever need. Made in the USA.A stainless steel spring flips the Eyepiece into multiple stop positions: vertical, 45 degrees and 90 degrees. The vertical position is for inserting your dope disk in to have easy access to while shooting. Dope disk NOT included.The E-10 fits all Vortex Riflescopes EXCEPT the 1-inch tube Viper model VPR-M-01BDC, VPR-M-04BDC and VPR-M-03BDC. Outside diameter: 41.5-46 mm | 1.6-1.8 inchesA stainless steel spring flips the O-40 cap into multiple stop positions at 45 and 90 degrees. Outside diameter: 45.5-48.5 mm | 1.8-1.9 inchesObjective-40 Fits: RZR-1589, RZR-1572, RZR-1565, RZR-1558, DBK-10025, DBK-10023, DBK-04-BDC, DBK-M-01P, DBK-01-BDC, DBK-M-04P, CF2-31005, CF2-31007, CF2-310017, CF2-310019, CF2-310025