Fits For Ninja Blenders BL770A 30/BL770 30/BL773CO 30/BL771 30/BL772 30/BL780 30/BL780C0 30/BL660 30/BL660B 30/BL663/ BL663CO 30/BL660WM 30/BL740 30 /QB3000/QB3000SSW 30/ QB3000QR 30/QB3001SS 30/QB3000QBK/QB3004/QB3005 /BL200 30/ BL201 30/BL201C 30/BL203QBK 30/BL203OCN 30/ BL203QB 30/BL203QY 30/BL204 30/BL206QGN 30/BL206QWH 30/BL206QY 30/BL206QBK 30/BL206QBL 30/BL207QBK 30/BL207QMBL 30/BL810/BL810C/BL810Q/BL820 /BL830,Model303KKU, 307KKU, 356KKU800,322KKU770,357KKU800,476KKU3000. Size: Diameter: If this O-ring is not perfectly suitable for your model, you can trim it with scissors to match perfectly. : The replacement gasket O-ring is made of Silica gel, which is safe and durable. Not easily deformed. Better protect the agitator and play a sealing role. Easy to Install: Easy to install, the gasket of the juicer or blender can be replaced. Flexible O-ring, easy to clean. Just replace the old sealing ring to keep the bottom blade clean and leak-proof. Package Content: enough for you to replace the old one and make your blender look new. Colour:White Material:Silica gel Size:8.2 x 8.2cm / 10 x 10cm<br><br>Package Contents: 6 * Sealing ring<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.