Factory (OEM) Replacement lens cap.
Fits the following scopes
Rico MK1 35 & 50mm objective lens
Iray Bolt 35 & 50mm objective lens
* Note this product does not fit the Nocpix Bolt P25R & L35R (Do not order this product for either of these two scopes)
InfiRay Outdoor makes them, and earlier models like the Rico MK1 and Bolt were sold under the iRay name. This cap is the factory part for those scopes, so it matches the original fit on the 35mm and 50mm objectives.
Same optics family, different name over time. Scopes that shipped as iRay, like the Rico MK1 and Bolt, now fall under InfiRay Outdoor. That's why this lens cap carries the iRay name while newer scopes say InfiRay.