one hundred pc Brand and NewType: O-Ring KitMaterial: Nitrile RubberColor: BlackSize: 5mm OD, 2mm ID, 1.5mm WidthNumber of O Rings: 50pcsApplication: Car Auto Vehicle Repair, Professional Plumbing, Air or Gas Connections, Faucet Tap * Size: 5mm Outside Diameter, 2mm Inner Diameter, 1.5mm Cross-Section Diameter.* 70A Durometer (Shore Hardness) for resistance to penetration.* Standard Nitrile Butadiene Rubber with a wide temperature differ from -20°C to 100°C. * The o rings has tender surface, large oil and heat resistance, wear-resistant and good sealing performance* Widely used for automotive, strain washer, filter, pump, water hose, plumbing pipe, engines, valves, air conditioning maintenance and far more.Package Included:50pcs Nitrile Rubber O-RingsNotes:1. Due to the different video display and light effect, the actual coloration of the article might be slightly diversified from the color confirmed on the pictures. Thank you!2. Please enable 1-3cm length erroers due to manual measurement. 3.1cm=0.39''.