The invention relates to a shears (1), in particular cross-cutting shears, for cutting flat material, comprising a upper blade support (2) and a lower blade support (3), at least the upper blade support (2) or the lower blade support (3) being reciprocatingly displaceably guided and being displaceable by means of at least one adjustment device (4, 5) relative to the other respective blade support (3, 2), the displaceable blade support (2, 3) being guided by means of the adjustment device (4, 5) and the adjustment device (4, 5) being designed such that it absorbs all the cutting forces and transversal forces.