This is an anodized Aluminium rigger for small MK30 frames, and for MikroKopter Okto frames (not for Okto2!) .
The hole distance on the motor mount is 19mm and is therefore suitable for Roxxy and E-Sky Motors (and compatibles).
For motor mounting hole distance: 19mm
Dimensions (LxWxH): 175x10x10 mm
Scope of delivery: