Large flyback transformer type BSC25-2065 is great for making powerful high voltage arcs, high voltage experimentation and high voltage supplies. Has 2 adjustable controls on side and 10 pin base. With 16" long high voltage corona wire that has cup to connect to CRT and 2 extra high voltage leads. Size about 3.4" tall x 2.1" diameter. Brand new - no specs or hookup information available. Retails for over $20.
Note: You should not buy this unless you are familiar with working with high voltages and you should be careful to observe all safety precautions when using this item.