There are indeed several grades of cutter heads. The price is different. I didn't expect the current sales. Really?
Also, brothers who use Philips razors must pay attention to this: when removing and cleaning the cutter head, don't remove the cutter head from the tool holder, just rinse the tool holder directly. If you want to remove the cutter head, you must be careful that each rotating cutter head should not be confused with its own net cover, and you will not use hard things to remove impurities from the cutter head, because Philips cutter heads are all imported and ground by computer. Although the patented rotary cutter head has self-grinding effect, the grinding effect after mixing may be slightly worse, and the effect after deforming the cutter head is hard to say. Philips is expensive because the quality of the cutter head is not generally good. If it breaks down, it will be expensive to buy another one.