The Supa-Scoop dehorner is an Australian development of the regular Barnes-style dehorners. The difference is that the Supa-Scoop has an �oval-style� jaw shape - flattened at the top and bottom - so that the jaws can take a ring of hair off with the horn (important for preventing regrowth) without cutting too deeply into the skull. Our Farmhand (own-brand) dehorners are all-stainless steel, with heat-treated jaws. Jaw openings (LxW): 33cm - 48mm x 50mm; 45cm - 70mm x 60mm. Dimension is overall length.