From Wahl Professional?s commercial grade line of products our Detachable Replacement Blade (#2111) was designed for professional use only with Wahl Professional full-sized clippers. This blade is a precision workhorse that leaves a cut length of 1/64" and is great for surgical prep and trimming. It fits your Wahl Echo Beret MEG and Sterling 4 trimmers. This blade is detachable meaning that it is easy to snap on and off. This makes routine blade cleaning a breeze while the blade itself is manufactured to resist rust and corrosion. Leo J. Wahl invented the first hand-held electric clipper back in 1919. He believed in necessary reasonably priced products that enhanced the lives of everyone who used them. Today all Wahl products embrace the principles of our founder. We offer reliable value-priced devices and solutions that protect skin and hair while performing on all skin and hair types.