Scope Rings. Badger rings are machined from the highest quality materials as serialized matched pairs. This guarantees that both rings are identical and eliminates the damaging effects of poor fitting mass produced rings. All ring hardware has been designed by us and is made to our specifications including the TorxÂ® screws that hold the scope securely in the rings. 34 Items Available.
The largest sinus cavities are about an inch across. Others are much smaller. 1  Your cheekbones hold your maxillary sinuses (the largest). 2  The low-center of your forehead is where your frontal sinuses are located. 3  Between your eyes are your ethmoid sinuses.  In bones behind your nose are your sphenoid sinuses.
The sinus tract is an abnormal channel which opens in any structure of the skin in any part of your body and ends in bone marrows. This is a channel or a passageway which is often called fistula. This makes a kind of passage between the skin opening and bones.