We do not have a 1/2" version of this cheese cuber.
The replacement wire kit works for both slicers. The Part number you need is Vollrath #1823. We do not have the replacement wires on our website but we can get them for you. Please call our sales team if you are interested. 1.888.388.6372
Sorry, you can not move the wires to make larger cubes. The largest size we have is 3/4"". Please see below. https://www.etundra.com/kitchen-supplies/food-prep-supplies/cheese-cutting-tools/vollrath-1811-cubeking-three-quarters-inch-cheese-cutter/ https://www.etundra.com/kitchen-supplies/food-prep-supplies/cheese-cutting-tools/nemco-55300a-easy-cheeser-three-quarters-inch-cheese-slicer-cuber/