•180-degree rotating hinge copper •Third gear Stroke Control •PVC wrapping •Environmental protection, pollution-free, high quality wood is not deformation and High quality steel, no deformation •Lifting mechanism with gas spring, energy saving, durable •Full-size suitable for all domestic sewing machines •Price concessions, products of similar neutral highest parity and randomly presented shock pad, shock absorption and can be reduce the surface wear . • Dimensions: Width:23-7/8”(47-3/4” open) • Depth:19-5/8Height: 30-1/2(29-3/4open) • Weight: 40KGS.