This is our 3rd immersion blender and all have been a disappointment. This one we used about 4 times. It worked until we dropped the blade attachment onto a wooden floor at a distance of less than 4'.  The blade component popped out of its compression fitting in the neck of the attachment, and cannot be put back together. You cannot buy replacement parts. I agree with others that the design makes it impossible to clean fully behind the circular metal plate that backs the blade.  It sits in a white rubber gasket, but not tightly enough to keep food from getting behind the plate.