Lens protection for 4-12x40 Nikon Prostaff rifle-scope

Lens protection for 4-12x40 Nikon Prostaff rifle-scope (with logo in bas-relief)
The two protections (objective and eyepiece) have been custom-designed for the Nikon rifle- scope, but they should be suitable for all trifle- scopes with a thickness of 50mm on the lens side and 43mm on the eyepiece side.
The anti-reflection filter has a diameter of about 49 mm because the seat has been designed to accommodate 49 mm photographic filters.
The filters are held in place through the use of 2 x 1 mm