1Sensitive Response: LED light emitting diode has fast reaction speed, as long as the power is turned on, LED diode will immediately light up. At the same time, this kit can also work in a high speed switch state, durable and durable. 2Strong Performance: These 5mm LED diode light sets of ours are safe, durable, energy saving, low heat dissipation and long life. 3Widely Application: These Led diode kits are suitable for variety of applications, including electronics component DIY projects, science projects, electronic experiments and commercial applications. 4Easy to Store: All 500pcs 5mm LED light diode are divided into different compartments of the plastic storage box, and the color of the LED are clearly to see, which will be easy to store and distinguish. 5Reliable Material: LED diodes assortment kit is made of semiconductors, more energy efficient and environmentally friendly than traditional lamps.