Diamond Plate Magnetic Stainless Steel Cup Holder [Kitchen] Attach the Diamond Plate Magnetic Stainless Steel Cup Holder to anything metal, such as riding mowers, tractors, heavy construction equipment, backyard metal tables, and more Features heavy-duty magnets in base for a secure hold Handsome exterior mirror finish and drainage hole Insulating foam insert keeps drink cold Measures 3-1/2" diameter, 4" height