The included screws are 6mm long. Make sure your motor mount is at least 3mm thick other wise the screw may touch the stator and lead to damage that is not covered by warranty.
This motor does not come with cross mount.
SunnySky X2204S KV2300 brushless out runner motor designed specially for multirotors in 200-300 sizes.
The motor with a bullet prop adapter weights 22 grams.
Recommended to use on a multirotor that weights maximum 250 grams multiplied the number of motors on the aircraft.