3 Pack Oster Blender Gaskets for Oster & Osterizer Model Blenders Made from food grade Silicone Rubber,Grey Colour May not fit some blenders. Outside Diameter 65 mm approx, Inside diameter 50 mm approx, Thickness 2.2 mm approx All USA orders will be shipped from USA via USPS First Class with a tracking number.Buyer pays for all return shipping. For all Undeliverable orders the sale will be treated as complete. This is an After Market Item and not an Original Equipment Manufactured item, All the Brand names and trademarks are used for Reference Purpose only. This product is not endorsed or sponsored by Oster or any other Original Equipment Manufacturer, nor there is any intent to imply that this is an original equipment part.