14" x 3.5" Spun Aluminum Toroid for Tesla Coils & High Voltage Projects

Description

This listing is for one Tesla coil toroid, made of commercially pure(1100 grade), spun aluminum.
The actual diameter is about 14.5 inches. The height is about 3.7 inches.
The secondary coil in pic 1 is 3.5 inches in diameter.
The secondary coil in pic 2 is 4.5 inches in diameter.
To attach the secondary coil, I use a small piece of aluminum tape to attach the bare secondary wire to the bottom of the toroid.
Here is a video of the toroid in action:
"Arc Reactor" Model B Manual Mode - YouTube
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Before connecting the two halves of the toroid, I use a bead roller to fold over the sharp edge of the seam, and then use silver colored gasket maker to connect the two halves.
I have been selling Tesla coil secondaries at a reasonable price for several years now, and I am happy to finally be selling aluminum toroids as well.
Thanks for looking!