Includes:

Adapter threads onto and converts a standard free wheel to a front disc brake wheel
160mm disc brake rotor 6 bolt pattern
6 rotor mount screws
2 caliper screws with washers

Application:
These parts are made in China.  The quality is standard for China bicycles and the price is inexpensive. 

Thread the disc brake adapter onto a standard size free wheel; place the converted free wheel on the left fork leg with the caliper.   Important instructions (warning): Use thread locking glue between the hub and adapter and all other screws included. Use Loctite Threadlocker Red 271 High Strength, or equivalent glue.