Similar to the first Arca Rail, however this one has T slots on the both sides allowing you to attach shooting accessories such as flashlight and laser. Edges are very smooth and makes it very comfortable to shoot offhand.
Features:
Aluminum 6061 T6
Hard black anodize
Arca Swiss Rail underneath with Picatinny at the end
Also has 1/4 x 20 threads for common camera tripod attachment