High voltage flyback for producing high voltage arcs, and high voltage experimentation. The internet has a great amount of information on using flybacks with simple driver circuits consisting of just a few electronic components. This one has 9 pins on the bottom and a 11" long high voltage lead on top. Size about 1.7" diameter x 1.8" tall (excluding bottom pins and top lead). Brand new, but no specs, hookup info or other data. Sold in a package of 2.
DISCLAIMER: You should not buy this unless you are familiar with working with high voltages and should be careful to take all safety precautions when using this.