[Compatibility]-The spare part for the blender blade is compatible with for 600 or Pro 900 Watt series high speed blender/mixer system. Fits 18 24 32 oz blender cups. 600w Unit No.: NBR-0601, NBR-1201, -101, -101B, -101S; 900w Unit No.: NB9-1301, -201. Blender attachments are not suitable for 250, for lean/RX or mixers. [Powerful Tight Seal Extractor Blade]-Made of high-strength material, the extractor blades rotate at high speed to extract all the nutrients in minutes, making them healthy, nutritious smoothies and your family to enjoy or. Closed by a ring, the replacement blades have a better sealing effect, more durable and no leakage, just mix into a healthier day without worry. [Extra 2 Seals]-Note that one washer is already pre-installed in the blade assembly for better sealing to avoid leakage. You can use the accessories on you get without any operation. Additional 2 gaskets are for . Do not install additional seals during testing or use. One blade is sealed with only one seal. Duration of the appliance place the extractor blade on the cup and twist until it is tightly closed. [Note]-Never immerse the blade in water. Simply unscrew the blade, hand wash with warm soapy water and rinse. Dry the extractor blade completely. Do not remove the gasket as this will cause permanent damage to the extractor blade and leakage. We recommend replacing the blender spare parts for 6 months or as needed for optimal performance. Color: Grey (Random brush color, does not accept specific color)Material: Plastic Package Contents:1 * Knife Holder2 * Sealing Ring1 * Cleaning BrushOnly the above package content, other products are not included. Note: The light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.