They have high precision and high stability because the resistors are made of good quality material. And it is very popular among electronics enthusiasts and various types of resistors can meet your different needs. They are easy to install because the durable, convenient and practical resistors are with simple design. The resistors are made of carbon film material. The length of resistors is 0.8cm and the width is 0.2cm. It is suitable compatible automotive electronics, security applications, industrial control, consumer electronics, communication equipment, medical electronics, aviation, aerospace and other fields. Item Name: Resistors Material: Carbon Film Power: 1 / 2W Deviation: ±5％ Size Details: Resistors: 8mm x 2mm / 0.31" x 0.07" (Approx.) Notes: The quantity is about 300pcs, due to manual calculation, the quantity might has 1-5pcs more or less, hope you can understand, thank you. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 300 x Resistors(Including 10Ω, 22Ω, 47Ω, 100Ω, 150Ω, 200Ω, 220Ω, 270Ω, 330Ω, 470Ω, 510Ω, 680Ω, 1KΩ, 2KΩ, 2.2KΩ, 3.3KΩ, 4.7KΩ, 5.1KΩ, 6.8KΩ, 10KΩ, 20KΩ, 47KΩ, 51KΩ, 68KΩ, 100KΩ, 220KΩ, 300KΩ, 470KΩ, 680KΩ, 1M, 10 compatible each Resistor)