Noa Store Ninja Ultima & Professional Series Nutri Blender Cup - 16 oz Single Serve To Go Cup with Lid / 3 inch Diameter Ninja Four Tab Single Serve To Go Cup 16 ounce with Lid 3 INCH DIAMETER *DOES NOT fit Auto IQ series or 900 watt systems. Cup is the Small diameter that measures 3 inches Authentic Cup/Lid Replacement for the Ninja Ultima Blender BL810 BL820 BL770 BL771 BL772 BL780 BL730 BL740 BL660 BL663. This is the small diameter cup measuring 3 inches in diameter Fits all 4 tab Ninja Professional and Ultima Series Blenders that came originally with Single Serve To Go Cups Its the small 3 inch diameter cup