Wahl Clipper USA Deluxe Corded Chrome Pro, Complete Hair and Trimming Kit, Includes Corded Clipper, Cordless Battery Trimmer, and Styling Shears, for a Cut Every Time – Model 79524-5201M

Heavy Duty Motor – Our ultra-power heavy duty hair trimming system easily cuts the thickest hair with 35 percent more power than standard Wahl electromagnetic motor clippers, This results in a very strong audible hum, but is completely normal to its operation. Don’t settle for a weak clipper.
Self-Sharpening Blades – Wahl’s precision self-sharpening precision blades stay sharp longer and continuously sharpen over time; oil between every few haircuts to increase the longevity of your electric clipper motor and blades
Adjustable Taper Lever – Easily change the closeness of your cut between guide comb lengths, move the lever up for the closest cut and move it down for a longer cut; allows for easy transitioning of blending and fading