The Spiral Mixer NOVA, has a structure manufactured in carbon stell. Painted with polyurethane; bowl and shaker in stainless steel AISI 304. In compliance with the healths rules, that indicate that all the surfaces that are in touch with the foods must be manufactured in stainless steel. Has a motor with 2 speed (mixed and rubbed) is actived by a system of belts and pulleys that make it totally silent. Kneader KN 25 Kneader KN 50 Kneader KN 100 .