Features: *Washers Set: Nylon Washers in Various Sizes M2, M2.5, M3, M4, M5, M6, M8, M10 are suitable for screws / bolts which are widely used in the industrial field to meet your various needs. *Washer range are made of durable nylon, good toughness, abrasion resistance, insulation, environmentally friendly materials. *Good workmanship: The insulated washers have a stable performance and are insensitive to air, water and temperature. Flat washers are mainly used to relieve pressure and reduce friction. *Plastic storage box: pre-classified for quick identification and protection against loss. Very convenient to use. *Wide Uses: Perfect for electrical connections on household and commercial appliances, automotive and marine applications, such as workshops, industrial maintenance, automobiles, doors, appliances, warehouses, pumps, drain plugs. Specification: *Material: nylon plastic *Color: Black(As Pictures Show) *Size: M2: inner diameter: 2mm, outer diameter: 5mm, thickness: 1mm (100pcs) M2.5: inner diameter: 2.5mm, outer diameter: 5mm, thickness: 1mm (100pcs) M3: inner diameter: 3mm, outer diameter: 8mm, thickness: 1mm(100pcs) M4: inner diameter: 4mm, outer diameter: 9mm, thickness: 1mm (50pcs) M5: inner diameter: 5mm, outer diameter: 10mm, thickness: 1mm (50pcs) M6: inner diameter: 6mm, outer diameter: 12mm, thickness: 1.2mm (50pcs) M8 inner diameter: 8mm, outer diameter: 16mm, thickness: 1.4mm (40pcs) M10 inner diameter: 10mm, outer diameter: 20mm, thickness: 2mm (10pcs) Package Included: 1*box of 500pcs washer