This transistors kit has wide range of application, which can be used for DIY projects, electronic experiments, electric products maintenance, electrical appliances repairing, etc. With a variety of types, which can meet your different needs. Features -Color:Black -Material:Silicon tube, germanium tube -Size:12.80X6.50X2.20cm/5.03X2.55X0.86in - Specification: S8050, S8550, S9012, S9013, S9014, 2N3904, 2N3906, C1815, A1015, MJE13001 - The transistor kit can help to complete the teaching experiment, increase the students' hands-on ability and thinking ability. - The transistor kit includes different types, you can choose according to your needs. - The transistor kit with simple structure and practical function, convenient to use, not easy to damage. - Our transistor kit has characteristics of the large power dissipation, high dielectric strength, good current performance. - This transistor kit is great for electronic products, electrical experiments, school teaching, DIY electronic items, etc. Package list: 20 x Transistors S8050 20 x Transistors S8550 20 x Transistors S9012 20 x Transistors S9013 20 x Transistors S9014 20 x Transistors 2N3904 20 x Transistors 2N3906 20 x Transistors C1815 20 x Transistors A1015 20 x Transistors MJE13001