All 750pcs are divided in a plastic case with different compartment and labeled clearly. Also, it wil not mix them up because of different color lens. It is suitable for DIY , School Science Experiments, Car Decorations, Signal Indicator, Electronic and Electrical Experiments, including Projects, etc. Features - ColorAssorted Color - Material: Metal. - Head Diameter: 3mm. - Kit Box: All different types of diodes are separated in a neat kit box and labeled clearly. - Wide Application: DIY , School Science Experiments, Car Decorations, Signal Indicator, Electronic and Electrical Experiments, etc. - It is great for electronic and electrical experiments. 750pcs are packaged in a plastic case with individed compartment. Package list: 150 x Red LED lights emitting diodes 150 x Green LED lights emitting diodes 150 x White LED lights emitting diodes 150 x Blue LED lights emitting diodes 150 x Yellow LED lights emitting diodes