When cutting a pie for a family meal one probably doesn"t really put a whole lot of thought into making each slice an even size. But when you"re putting each piece up for sale it"s important that slices maintain an equal size so that each is equally appetizing to your customers. In order to maintain the proper size of each of your pieces of pie Royal Industries recommends using its 8-slice wire guide pie marker (ROY PMW 8). This marker uses wires to clearly mark where each cut should be made. It has a 9 1/2-inch diameter.