Nylon 6.6 box, it can be bored in order to put in dipoles and connector 

Aluminium ring 4 mm diameter 1000 mm lengthr 

Enamelled round copper 4 mm diameter length 1000 mm

Useful material for the realization of dipoles, inductors, power coils

The product is wound on a single reel. Example: if you buy 3 units of 1000 mm, you will receive a single coil of 3 meters.