Universal Lyre screws in various thread counts, 6-32 for many Bach (not all), Conn & King horns; 8-32 for some Bach & Getzen horns; 6-36 for some Holton horns; 6-40 for some Conn & Blessing horns; 3.5 x 6mm for some Yamaha and imported horns. Brass finish. Please check your threads.
