How do you keep an eye on the mix and combine in half the time? Planetary mixing action enables 360 degree coverage of the mixing bowl. Achieved by the counter-clockwise motion of the mixer head combined with the clockwise sweep of the beater for thoroughly mixed ingredients. 100% Metal Gearing. Hardened metal gears for durability and long life. Metal gears with more teeth for amplified performance on heavier loads. Splash Guard & Sealing Lid compatible with both the glass bowl and stain-less steel bowl.