Disclosed is a chain disk corner. In certain embodiments, the chain disk corner includes a bi-directional orientation independent chain disk corner wheel. In particular, the wheel is molded and devoid of moving parts. In certain embodiments, the chain disk corner includes a window portion. In particular, a bottom housing subassembly includes a bottom body of an opaque material and a hingedly attached window portion. In certain embodiments, the chain disk corner includes a reinforcing washer. In particular, a top washer is attached by injection molding to an interior of the top body, and/or a bottom washer is attached by injection molding to an interior of the bottom body. In certain embodiments, the chain disk corner includes a top surface devoid of pockets. In particular, a top body includes a plurality of ribs positioned at an interior surface of the top body.