This Cobra motor mount is an exact replacement for the one that comes with the Cobra 3510, 3515, 3520 and 3525 size motors. It comes packaged with a set of four M3x0.5mm flat head Phillips screws which are 6mm long to attach the mount to your motor.
The Cobra 35mm Cross Style motor mount is stamped from high strength 3mm thick aluminum sheet stock and together with the 4 motor screws it weighs 8.5 grams.
The motor mount holes have a 25mm center to center spacing on both diagonals. The hole spacing for the firewall mounting holes is 50mm center to center as measured on the diagonals through the center of the mount.