Threaded compression driver is compatible with horns having standard 1-3/8" x 18TPI threads.
53-970 - Threaded Midrange Tweeter ABS Horn Lens
ABS Compression Horn Lens
Molded ABS resin lens is ideal for all high frequency compression drivers.
I ordered batteries and a set of test leads. I received them within three days of when I ordered them and I got a great price. Fast service and a great price - what more could you want.