Upgraded haircutting experience: After replacement, the meshing accuracy of the blades is restored, saying goodbye to the pain of pinching and pulling, and achieving a silky smooth trim. Prevention and control of the source of health hazards: eliminate the old knife head, and restore the cleaning after replacement. 40% reduction in motor loss: the friction coefficient of the replaced cutter head is reduced, the heating jam of the main engine is reduced, and the life of the core components is prolonged. Economical: The replacement cost of a single accessory is less than 10% of the whole machine, which avoids the scrapping of the whole machine due to small losses. Compatible for Philips， BT7201/15 BT7201/16 BT7202/15 BT7201/13 BT7202/16 BT7202/13