Choppers have thicker blades than slicers but are not as thick and heavy as cleavers. For this purpose specialized egg slicers exist, to ease slicing and yield even slices. Slicers may have plain or serrated edges. The thin blade makes slicers unsuitable for chopping any bones. There are different styles of cheese slicers, designed for cheeses of varying hardness. Buddy L toys, Slice-Master bread and cake slicers and Chippewa Pumps, which made water pumps. Bread slicers returned two years later. Tomato slicers have been sold since the 1950s. Some egg slicers that have thin wires can be played as string instruments. The main varieties of slicers mature on vines with large leaves that provide shading. In Excel, there is a Recommended Charts feature, and PivotTable Slicers. The first egg slicers were produced in Berlin-Lichtenberg. Clipping circuits are also called "slicers" or "amplitude selectors". With the addition of Italian slicers the SHO now had right and left specific wheels. As with biceps slicers, there is a common misconception that this technique causes only pain.