Ferrite Toroid Core 5000-1
If you are building a high power DRSSTC Tesla Coil, look no further for your ferrite core needs. These massively large cores are the perfect solution for winding high power full-bridge gate transformers and the giant 1000:1:1 three-way cascaded current transformer for current sensing.
Dimensions: 2.40" x 1.40" x 0.50"
Click here for the datasheet (PDF)