Instruct: Classify a review into positive or negative sentiment.
Query: Is it the Real Thing?

I was sure these were the same replacement heads that came with my original Braun toothbrush, but evidently not. The brush mechanism is SO loose that I am not really sure if my teeth are getting the same good brushing. The loose space between the brush and stem actually pinches the inside of my mouth as I brush. I certainly would never repeat the purchase. I will look for genuine replacements.