Abstract: There is disclosed a bearing (4) usable for scissors, including a disk-shaped holding plate (44) and a plurality of steel balls (4). The holding plate (44) is provided with a plurality of steel ball holding apertures (41) for rotatably holding the steel balls (40) under a condition where the spherical surface of each steel ball (40) is projected beyond either side of the holding plate (44); and, at a peripheral edge portion of each steel ball holding aperture (41), and at an outer peripheral edge portion of the holding plate (44), foreign material blocking barriers (42, 43) are respectively formed taken along the entire peripheral edge portions so as to each have a height lower than the height of the projecting portion of each steel ball (40).