This product contains up to 82 component categories, 24 types, selected commonly used and most popular electronic components, including BJT, PNP, NPN, MOSFET, audio, switching transistor, Sc tky diode, switching diode and voltage regulator And so on, with a box full of spare parts for your various projects. All components appear in size and are equipped with SMD SMT soldering technology. These delicate and components can help you perform a variety of preventive and complex electronic soldering projects, ensuring that your project is implemented effectively. We focus so much on user experience that all components are sorted and put into a convenient box that we prioritize labeling, so when you need to find a specific component, you only have one touch, whether it's a BJT or a MOSFET or a Xiaomi Starting from the root, you can find them at the first time every time, which greatly improves work efficiency. Whether you are an electronics enthusiast or a professional electronics engineer, you can find what you need from our products. Electronic components are rich and diverse, corresponding to various scenarios, making them an Perfect choice for academic research or work. We promise that all components we provide are manufactured according to the strictest quality standards, and our goal is to provide you with the most stable and reliable components so that your project can run smoothly. Whether you are a novice or an expert, you can find components that meet your requirements from our products. Colour:P o Color Material:plastic+metal Package Contents: 1 set x transistors Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.