The quarter hollow blade cut, also referred to as "1/4 hollow", is a type of razor geometry that is located between the wedge and full hollow cut. It describes the cross-sectional shape of the blade, which is slightly concave, i.e. inward, from the spine towards the blade. In contrast to the full hollow ground, where this curvature is very pronounced and the blade is thin, the quarter hollow ground retains considerably more material behind the blade. This gives the blade more rigidity and weight. When shaving, this characteristic results in less blade flexibility, which can be advantageous for shaving very hard and thick beards because the blade does not flex under pressure. The shaving sound, the so-called "singing" of the razor, is less pronounced with this cut than with more hollow variants. The quarter-hollow razor provides more tactile feedback. The greater mass of steel makes the blade more resistant to damage.