We are offering a high quality power transistor kit, which includes 10 different models: BC327 PNP, BC337 NPN, BC517 NPN, BC547 NPN, BC548 NPN, BC549 NPN, BC550 NPN, BC556 PNP, BC557 PNP, BC558 PNP. Each transistor model is clearly labeled for easy identification, making it convenient to use. These transistors have high dielectric strength, fast switching speed, high power consumption, and excellent current performance. They are an excellent choice for DIY projects. Made of high quality semiconductor material, these transistors have stable performance. They are widely used in various applications such as electric vehicles, smart home security monitoring, communication transmission, and electrical power supply. The kit includes 200 transistors, with each model having 20 pieces. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.