Transparent Quick Flip Spring Up See through Open Lens Cover 30-69mm Eye Protect Objective Cap

Features:

Material: Rubber.
Flip-open design.
Caliber: 30mm, 37mm, 38mm,39mm,39.8mm, 41mm, 42mm, 43mm, 44mm, 45mm, 46mm, 47mm, 48mm, 49.5mm, 50mm, 51mm, 53mm, 57mm,58mm, 59mm,60mm,61mm,62mm, 64mm,65mm,66mm,67mm,69mm.
Protects your scope lens from BB’s, scratches & dust.
The caliber is the internal size of the cover, also the size is for the external diameter of the scope, before you buy it, you need to measure the diameter of your scope.