The flexible stirring edge allows faster mixing without having to stop the motor and use a spatula in between. Coated metal with silicone edge. Only compatible with the 3.3 L food processor (5KSM3311X). Article number: 5KFE35T Material: aluminium, with non-stick powder coating (polyester) Dimensions: LxWxH 3.5x12.8x13.4 cm