750 Resistors - 1/4 Watts, 5% Tolerance - 15 different resistance values (1E,10E,100E,390E,470E,1K,4K7,10K,15K,47K,100K,150K,220K,470K,1M), 50 Capacitors - Electrolytic (1uF,2.2uF,4.7uF,47uF,220uF) & Ceramic (10 (10pF), 100 (100pF), 102 (0.001 uF), 103 (0.01 uF), 104 (0.1uF)), 20 Transistors - BC547 & BC557, 6 Integrated Circuits - NE555, LM741, CD4017, 15 LED - Red, Green, Yellow (Transparant)