This mixing beater blade suitable for KitchenAid 4.5 and 5 Quart Tilt-Head Stand Mixer, like models: Kitchenaid K45SS, KSM1, KSM100, KSM110, KSM120, KSM15, KSM16,KSM75, KSM8, KSM90. Fits for KitchenAid 4.5 and 5 Quart Tilt-head stand mixer bowls, like models: K45SS, KSM100, KSM110, KSM15, KSM16,KSM75, KSM8, KSM90.