The product is 3 wires ,2 ground and 1 hot. Red is hot, white and green are ground
The material is ceramic magnet, and the back is chrome plated
It could be anywhere from 'just parts' to 'Useable as is', it is with 3 switch positions and 1 tone control. It can almost sound single coil and go way into humbucker crunch.
you can modified the space for the bottom of guitar neck to fit that's it, all 11 holes matched the guitar's body exactly.