Package in a durable transparent box with label. It is easy to distinguish the size of the product, you can choose the suitable one to meet all your needs. It is used to protect the LED standing on the PC board, so that the height is consistent, the middle partition design, the joint angle will not bend, or short circuit. These small items can be widely used for various projects such as microcontroller board building, motion sensor mounting, controller board building and flight controller stack building, etc. Features - Color: Assorted color. - Material: Nylon and ABS. - Size: 19.50 x 13.00 x 4.00cm/ 7.66 x 5.11 x 1.57 inch. - It comes with a solid well-arranged plastic case that is light enough for you - Easy to carry to the field, having all the parts handy and easy to be found. - Material are durable hard white nylon. Various sizes for meeting all your different use. - These standoffs are made of insulated nylon material. - Which are portable but durable! You can to use them for isolating or tightening PCB, etc. Package list: 150 x nylon round spacer standoffs