Blendin 2 Pack Extra Large Colossal 32 Ounce Cup with Lip Rings,Fits Nutribullet 600W, 900W Blenders Two 32 ounce Extra Large Cup Jars with Two Screw Off Comfort Lip Rings. Fits Nutribullet 600 Watt and 900 Watt only. The cups will NOT work with NutriBullet RX (1700 watts) or NutriNinja. Dishwasher Safe.