Roclkford Fosgate model SPL-4. These are 4x6" plates. 3" mid and 1" tweeter. They can be removed from the plate and mounted seperate. Comes with x-over network. And I also have Pioneer 3-way 6x8" speakers. Model A6865. Perfect replacements for Ford/Mazda vehicles. Both sets are 4 ohm and in excellent condition. Need to sell them both ($85 delivered for everything) or will trade them both for a pair of 5 1/4" co-ax speakers.