AXCEL X-31 FRAME 1-3/8"-35mm LENS
If you are using an AXCEL™ X-31 Scope and want to add a lens to enhance your target picture, you will need to purchase a lens frame for it to fit perfectly into the scope housing. The lens frame protects the lens edges and helps fit the lens into the scope housing.
So, if you are unsure of the brand lens you will be using, if you are unsure of the lens' technical size, or if you think you may alternate lens brands in the future, the AX31-LF-SET is the best lens frame option for you.
The X-31 lens frame set includes frames that surround either an 1-3/8" diameter lens or 35mm diameter lens.
If using a lens with the X-31 Scopes, you will also need to purchase the X-31 Lens Retainer (sold separately).