Flexible edge beater: Flex edge beater is made of non-stick coated metal construction and flexible silicone edges for heavy duty and high durability. This beater blade can continuously beats, scrapes and mixes ingredient side and bottom ensure mixing is done thoroughly without scratching your mixing bowl and cuts mixing time by as much as 50%. Food grade materials: This mixer paddle is made of food-grade hige density plastic , silicone rim, which is safer and healthier than a traditional mixer paddle. Perfect for healthy cooking. Dishwasher safe: After you have done with the beater, just set it in the dishwasher. It's safe and easy to clean. Multifunction flat beater: Perfect for thin cookies dough, compound butters, pie pastry, creamed frostings, mashed potatoes and more, but NOT for hard dough. Do not use blade in a dry bowl. Compatible with: Works with Kitchen Aid 4.5-5 quart tilt-head stand mixer bowls , fit modles: K45, K45SS, KSM1, KSM100, KSM110, KSM120, KSM15, KSM16, KSM75, KSM8, KSM90, KSM105GBCER (Not Fit 5 QT Bowl-Lift Mixers) If you are not sure what sizes of your mixer, please contact us.