Good price but noisey
The heads look like the OEM parts and install easily, and offer clean shaves so far. The problem is the heads are extremely noisy.  They have a loud rattle when using. I use them for shaving my head and face and when shaving around my ears the noise is almost unbearably loud. I've rechecked the installation and they are installed properly, it's just the materials used and tolerances, from what I can tell, that are not up to Norelco specs. When these need replacing, I'll go back to the original, that's if I don't replace them before that do to the obnoxious noise and rattling.
Rating: 3 stars