[Compatibility]-- The replacement part of for blender blade is compatible with for 600 or for Pro 900 Watt High-Speed blender series/mixer system. Fit for blender cups 18 24 32 Ounce. 600w unit number: NBR-0601, NBR-1201, -101, -101B, -101S; 900w unit number: NB9-1301, -201. The blender attachments are NOT suitable for 250 , for Lean / , or blenders. [Powerful Extractor Blade with Tight Seal] -- Made of high strength , the extractor blades rotate at a high speed to extract all of the nutrients in a few minutes, making healthy, nutritious smoothies and your family to enjoy or . Sealed with ring, the replacement blades for have a better sealing effect, more durable and no leakage, just blending your way to a healthier day in no worry. [Extra 2 Gaskets]-- note one washer is -installed in the blade assembly already for better seal to avoid leakage. You can use the accessories at you receive without any operation. Extra 2 Gaskets are for your replacement. Do not install the extra Gaskets when test or use. One blade are only sealed with one Gasket. time operating the appliance place the extractor blade onto the cup and twist until it is tightly sealed. [Note]-- Never submerge the blade in water. Simply twist off the blade, hand wash with warm soapy water and rinse. Dry the extractor blade completely. DO NOT REMOVE THE GASKET as this will permanently damage the extractor blade and cause leakage. We recommend replacing your for blender spare parts 6 months or as needed for optimal performance. Colour: grey (random brush color, 't accept the specified color) : plastic Package Contents: 1 * Knife holder 2 * Sealing ring 1 * Cleaning brush Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.