Features: Our 270piece O Rings Assortment Kit provide selection of rubber washers in 18size, perfect for quick repairs and maintenance tasks. Suitable for both professional and DIYers, these rubber seal provide solution for your repair projects. These assorted o rings craft from outstanding rubber with good air tightness and highly temperature resistance, which is oil resistant, heat resistant, wear resistant for long lastings use. Soft and flexible rubber seal o rings, easy to use. Rubber o-rings can prevent metal-to-metal contact thereby protecting wiring, cable running through firewalls, metal panel, and so on. These rubber o-rings washers is packed in a divideds and labeleds storage box, you can save your efforts to find and choose the size, which is convenient for your storage and picking. Wide Applications: Widely used as sealing rings and washers for the connectors of hydraulic machines, pipelines, etc. Suitable for plumbing, auto repair, garage, workshop, automobile, door, window, appliances, pulley, etc. Specifications: Material:Rubber 1pack/270pcs includes 20pcs 5.29x1.78mm,20pcs 6.07x1.78mm,20pcs 6.8x1.9mm,20pcs 7.65x1.78mm,20pcs 7.8x1.9mm,20pcs 8x2mm,20pcs 8.8x1.9mm,15pcs 10.82x1.78mm,15pcs 10.77x2.62mm,15pcs 11x2mm ,15pcs 12x2mm ,10pcs 13.9x1.80mm ,10pcs 13.95x2.62mm ,10pcs 14x2mm ,10pcs 15x2mm ,10pcs 17x2mm,10pcs 17.17x1.78mm ,10pcs 17.04x3.53mm; Package Includes: 20pcs 5.29x1.78mm 20pcs 6.07x1.78mm 20pcs 6.8x1.9mm 20pcs 7.65x1.78mm 20pcs 7.8x1.9mm 20pcs 8x2mm 20pcs 8.8x1.9mm 15pcs 10.82x1.78mm 15pcs 10.77x2.62mm 15pcs 11x2mm 15pcs 12x2mm 10pcs 13.9x1.80mm 10pcs 13.95x2.62mm 10pcs 14x2mm 10pcs 15x2mm 10pcs 17x2mm 10pcs 17.17x1.78mm 10pcs 17.04x3.53mm note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.