It's a DIY Tilt kit for ZMR250 frame.
It is designed to tilt cameras like - http://www.banggood.com/ru/FPV-14-CMOS-HD-Color-Camera-Module-600TVL-120-Degree-Wide-Angle-p-944546.html
To assemble it you need two 2M 6mm bolts and one HXT500 servo. Also it's required to drill the holes in frames. I use 1.8mm drill for frame that hold camera and 2-2.2mm drill for base plate. Also you may need small 0.5mm drill to have nice hole for push-rod. 1) Drill needed frame with 1.8mm (for 2mm bolts) 2) Drill base plate with 2 or 2.2mm (bolt must be easy to turnaround, but without gapless) 3) Put camera into the frame and drill holes to fix it. (make sure you install it in right direction top-bottom) 4) Install HXT500 servo and drill holes to fix it. 5) Apply double sided tape to the bottom of the tilt. 6) Install it on the ZMR250 7) Connect servo to Rx or to quad brains like CC3D