Our 3.25 and 4.5 inch long NATO rail with safety stops and NATO Clamp block offers superior torsional strength for heavy loads. The adapter block on top alows rotated mounting of our handle mounts. Create quick release handles, EVF mounts, Monitor mounts and more. The rail mounts to any plate with 1/4-20 tapped holes using two or three of the included 1/4-20 fasteners. The quick release clamp block has two 1/4- 20 and two 10-32 tapped holes on the top to allow the addition of our handle mounts, 60 mm rail blocks or our 1/2-13 flange mount to allow you create a wide range of quick release mounts.