I bought extra clipper heads and filters. The filter came with one of the heads but it was not obvious. Then I went back and forth with Customer Service, thinking I was missing the additional head. 1. Clearly mark the box with different colors, or 2. Just send the head as good PR. If it's $5.99 (on sale), the cost is small, so you could have sent it instead of several emails to figure out that it was in with the filters.