An adjustable hair clipper blade assembly is provided for attachment to hair clippers. The adjustable hair clipper blade assembly includes a stationary blade assembly and a guard attachment. The stationary blade assembly includes a stationary blade having a lever mounted on the front of the stationary blade for interfacing with the rear side of a guard attachment that is moveably secured against the stationary blade. The lever moves the guard attachment in a first direction when the lever is moved in a first direction and moves the guard attachment in a second direction with the lever is moved in a second direction.

An electric hair cutting device with a blade adjustment mechanism includes a housing. A bladeset is attached to the housing that includes a moving blade and a stationary blade. A blade slide is externally mounted to the housing and mounted to the stationary blade. The blade slide and stationary blade are slidable relative to the moving blade. The electric hair cutting device also includes a taper lever mechanism. The taper lever mechanism allows for adjusting a position of the blade slide and stationary blade relative to the housing. The taper lever defines a rotational axis. The taper lever mechanism has a selectively positionable collar with a first setting and a second setting. In the first setting, rotation of the taper lever about a rotational axis of the taper lever mechanism produces an audible response. In the second setting, rotation of the taper lever does not produce an audible response.

A hair cutting device, including a blade arrangement with a first longitudinally movable cutting element and a second, transversely movable cutting element, a drive device which drives the blade arrangement, and a cutting length adjustment device which cooperates with the first cutting element in such a way that a longitudinal offset can be set between the first cutting element and the second cutting element, wherein the cutting length adjustment device has a lever with a pre-tensioned locking lug for adjusting the second, movable cutting element and at least one holding recess, so that the locking lug engages in the holding recess, wherein the lever further has a sliding sleeve which, in a first position, holds the locking lug against the pre-tensioning force, and in a second position releases the locking lug.