~10M Wire for making Electromagnet School project

Suitable wire for making an electromagnet (commonly needed for school projects). The wire is cut to the correct length when using 3V .. 6Volt (2 to 4 alkaline batteries) power supply. You wil need a ~40mm x M5 Mild steel bolt and nut to turn the wire onto. (Must be mild steel, Stainless steel wil not work!) Wind ALL the wire on a screw to make sure the wire forms an high enough resistance to make sure the battery lasts longer. Be carefull not to wind too tightly since the wire could snap ealily.

Key Features:

- Correct length for 3V .. 6V

- thin enough to ensure a compact design