This is a 10 pack of the knurled rings for accessory lenses or they can be used to help in module focusing. For all AixiZ 12mm diamater modules.10 Pack of Metal Rings for 12x30mm Modules [AIX-RING-12M]$4.88PriceQuantityAdd To Cart
![10 Pack of Metal Rings for 12x30mm Modules [AIX-RING-12M]](https://static.wixstatic.com/media/ac1ecd_16f25763eed1479f9147cd931c9a28d2~mv2.jpg/v1/fill/w_772,h_343,al_c,q_80,enc_auto/ac1ecd_16f25763eed1479f9147cd931c9a28d2~mv2.jpg)