"This gasket has a small ridge or lip. Durable Compatible with 600W/900W extraction inserts and flat mill inserts These gaskets are suitable for use with mixers with lips. Not suitable for use with mixer gaskets without lips. These gasket replacements for 600W 900W mixers fit NutriBullet extraction blades or flat mill blades or any cap. Replacement Parts Blender Lip Blender Replacement Parts Color: Gray Material: plastic Dimensions: Outside diameter: 4 inches Inner diameter: 3.75 inches Specifications: 600w*2 pieces/900w*2 piecesPackage Contents: 4 heavy-duty washers in total Please note: Not compatible with Nutri Ninja, NutriBullet RX, Magic Bullet or Baby Bullet blenders. Only the above package contents, other products are not included. Note: Light photography and different monitors may cause the color of the item to be slightly different from the actual item. Measurement tolerance is +/- 1-3 cm. ".You'an store products