[Compatibility]-- The replacement part of for Nutribullet blender blade is compatible with for NutriBullet 600 Watts or for NutriBullet Pro 900 Watt High-Speed blender series/mixer system. Fit for Nutribullet blender cups 18 24 32 Ounce. 600w unit number: NBR-0601, NBR-1201, NB-101, NB-101B, NB-101S; 900w unit number: NB9-1301, NB-201. The blender attachments are NOT suitable for Magic Bullet 250 watts, for NutriBullet Lean / RX, Bullet or Nutri Ninja blenders. [Powerful Extractor Blade with Tight Seal] -- Made of high strength material, the cross extractor rotate at a high speed to extract all of the nutrients in a few minutes, making healthy, nutritious smoothies for you and your family to enjoy at home or on the go. Sealed with ring, the replacement for Nutribullet have a better sealing effect, more durable and no leakage, just blending your way to a healthier lifestyle every day in no worry. [Extra 2 Gaskets]-- Please note one washer is pre-installed in the blade assembly already for better seal to avoid leakage. You can use the accessories at once you receive them without any operation. Extra 2 Gaskets are for your future replacement. Do not install the extra Gaskets when test or use. One blade are only sealed with one Gasket. Every time before operating the appliance Please 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 Nutribullet blender spare parts every 6 months or as needed for optimal performance. Colour: grey (random brush color, don't accept the specified color) Material: plastic Package Contents: 1 * Knife holder 2 * Sealing ring 1 * Cleaning brush Only the above package con