This is a 1.5mm carbon fiber FPV race frame for a JJRC JJ1000 flight controller. It's 100mm motor to motor, setup for 8.5mm brushed motors andup to 65mm props.  Design details to note are frame holes for mounting the board using original hardware (1mm self tapping screws), recess cuts for access to motor solder pads (allows for motor replacement without disassembly). It also features additional frame holes for FPV camera top plate, canopy, battery box expandability ect (3d printed and carbon fiber). 

3D printed addons are available free at: http://www.thingiverse.com/xjedix/designs