I already built a metal detector by using 555 timer IC. My problem is 10mh inductor?

Can you give me a details of 10mh inductor?
1. The number of wires?
2. The number of turns?
3. The coil diameter?
4. The coil length?

Thank you. I am hoping for your sonnest reply.

Air cored, 25mm long, 25mm diameter, 800 turns.
frollard4 years ago
You need to do some pretty heavy math, or use a wizard calculator:

I searched for 'inductor calculator' and came up with that; it will figure out exactly what you need - substitute the numbers you know to find out what you need to know.