Jay, Those are 2 piece mounts that show you flexibility. If you want ot mount a scope like the Carbine one pictured you have them face each other, for longer tubed scopes they can be mounted facing different directions. Flexiblity and a sub-$50 price point have made these P-Series Mounts a very hot item. But as I usually add, find what works best for your needs and buy it.

http://i1216.photobucket.com/albums/...40/P-222-7.png