Extend/ shrink the size by moving the lip/handle (on the side) based on the cake sizes. -premium, durable and rust free. -layered mousse cake at home with this adjustable cake slicer, which comes complete with bonus serrated multi -purpose cake server. -warm tips: when adjust the size or wash the product, please don't put hand on the edge of the product. serrations wooden handle stainless steel serrated knife / cake knife /decorating knife / bread knife