👍Our t Blades made of high quality steel material,long life blades that stay sharp, standard replacement blades are for professional use only. 👍Tight-cut T-blades are heat-resistant for a cooler, more comfortable smooth cut. 👍Replacement t-blades are compatible with wahl trimmer 9864/9864SS/9686/9818A/9854L/9876L/9854/9816-200/5598/9816/9818/9818L/9867/9870/9880/9884/9886/9888/9937/9994/WSS3L/SS2L 👍Keep your trimmer performing super well. It is recommended to replace the blade every twelve months for 9864/9864SS/9686/9818A/9854L/9876L/9854/9816-200/5598/9816/9818/9818L/9867/9870/9880/9884/9886/9888/9937/9994/WSS3L/SS2L