The 2111 Snap-On Blade set is intended for professional use only and is designed to deliver the sharp performance that experts demand. This is the standard replacement set for WAHL: Beret.Sterling: Mag Trimmer and Sterling 4 Trimmer. Package contains (1) Wahl Professional #2111. Detach feature allows for easy maintenance and replacement. Blades are not adjustable to a zero-overlap. Made in the USA.