The performance to deliver the perfect taste for every blend. The Refurbished K400 variable speed blender's 3-part blending system easily blends even the toughest ingredients for a consistent texture. The ribbed jar design creates a powerful vortex, pulling ingredients into the unique asymmetric blade that cuts at four distinct angles, ensuring your ingredients are thoroughly blended. The Intelli-Speed® Motor Control then senses contents and maintains the optimal speed to power through all ingredients, from kale to almonds and more. Whether you're creating fruit smoothies or prepping a fresh marinade for a dinner party, control the taste and texture of your blends with the 5-speed variable speed dial, or use the 3 Preset Recipe Programs: Ice Crush, Icy Drinks, and Smoothie.