Blendin 2 Pack 32 Ounce Cup with Sip N Seal Lids,Fits Nutri Ninja Auto-iQ 1000W and Duo Blenders Fits Nutri Ninja Kitchen Systems Auto IQ and Duo Blenders Does NOT fit Ninja Blenders that have a 3" 16 Ounce Cups. These have 4" diameter Models it fits are BL480 BL481 BL482 BL490 BL640 BL680 BL450 BL482 BL682 BL642 BL640 Includes Two 32 oz. Cups and Two Sip N Seal Lids Compatible with the BL450 Series, BL480 Series, BL640 Series, CT640 Series, and CT680 Series.