Features:OOTDTY Made from nylon material, with a smooth surface, antioxidant and wear-resistant property, lightweight, and good insulation. Can be used for a protracted time.It can effectively function a supporting floor for the weight distribution and put on resistance of fasteners.It has perfect insulation and corrosion resistance, and performs a protective and secure role. Durable and easy to install.Pack in a strong and clear storage box. Each size has clear labels. It is terribly convenient for you to make your mind up the size, clean to carry and store.Widely used in mechanical equipment, chiefly to minimize stress and friction, stop leakage, isolation, loosening or dispersion of pressure.Specifications:Material: NylonBox Size: Approx. 13x6.5x2.3cm/5.12x2.56x0.90inchTotal weight: 54.6g2mm Size: Approx. 5x2x1mm/0.20x0.08x0.04inch2.5mm Size: Approx. 5x2.5x1mm/0.20x0.10x0.04inch3mm Size: Approx. 6x3x1mm/0.24x0.12x0.04inch4mm Size: Approx. 8x4x1mm/0.31x0.16x0.04inch5mm Size: Approx. 10x5x1mm/0.39x0.20x0.04inch6mm Size: Approx. 12x6x1.2mm/0.47x0.24x0.05inch8mm Size: Approx. 16x8x1.5mm/0.63x0.31x0.06inch10mm Size: Approx. 20x10x2mm/0.79x0.39x0.08inch(Size=outer diameterxinner diameterxthickness)Package Includes:100pcs 2mm100pcs 2.5mm100pcs 3mm50pcs 4mm50pcs 5mm50pcs 6mm40pcs 8mm10pcs 10mmNote:Please allow 1-2cm errors thanks to handbook measurement, just remember to do not intellect earlier than you order. Due to the difference between diversified monitors, the image might not reflect the particular shade of the item.