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 WAHL， 9876 9876L 9855 9864 9867L 9870L 9869 9818L 9854 9854L 9860 9860L 5708