Wahl’s blade oil is specially designed for all Wahl electric hair clippers, trimmers, & blades; works well with other brands & blades. Prevents rust from forming & helps extend the life of the clipper & blades; can also reduce the likelihood of blades becoming dull. Simply place 2 or 3 small drops of oil between the blades every few haircuts to maintain optimal blade lubrication; lubricated blades also can reduce friction and heat caused by unlubricated blades. Wahl clippers and trimmers have been used by professionals in the salon & barber industry since 1919. With self-sharpening precision blades Wahl clippers, shavers & trimmers deliver a smooth shave.