Specifications: NE555, LM324, LM393, UA741, ULN2803, LM358, LM386, NE5532, ULN2003, DIP IC welding adapter connector Application: Widely used in daily assembly, such as precise timer, dual op amp, audio amplifier, Darlington array, four op amp, bass guitar overload pedal PCB, etc. Voltage Parameter How to Use Package List 10 x NE555 5 x LM324 10 x LM393 10 x UA741 5 x ULN2803 10 x LM358 10 x LM386 10 x NE5532 5 x ULN2003 10 x 1 x Storage Box