| This coil has a 2.5" diameter secondary and produces about 12" of spark. This one is great for classrooms. |  |
| This coil has a 4" diameter secondary and produces about 3' of spark. This coil is suited for use in auditorium type settings. |  |
| This coil has a 9" diameter secondary. It is still under construction. It looks like it will be producing somewhere in the neighborhood of 7-8' of spark. Outdoor venues would be appropriate. |  |
| This is a special project coil that we recently built for a client |  |
