Replacement Gasket Compatible for Nutri Ninja Gasket for Blade and Travel Cup for Nutri Ninja Bl Series Models. Made from food grade Silicone Rubber. Comes with 3 gaskets size can be found looking at the inch grid. OD 3.1 inches/80 mmX ID 3.0 inches/76.5 mm X 0.177 inch/4.5 mm Thickness for the blade assembly All 3 gaskets may not be useful for your particular blender.Only Known Model that this gasket will not Fit is Nutri Ninja 1000.For all Undeliverable orders the sale will be treated as complete All orders will be shipped from USA , via USPS First Class,without a tracking number., in a regular business envelope with "YOUR AMAZON ORDER printed on it.Buyer pays for return shipping for all returns. This is an after market item and not an Original Equipment Manufactured item the all brand names and trademarks used for reference purpose only, this product is not endorsed or sponsored by Nutri Ninja or any other Original Equipment Manufacturer, nor there is any intent to imply that this is an original equipment part.