This is a vintage Wisco aluminum colander with a single handle. The strainer is pierced in concentric circles on the base with triangles around the sides. This looks like a sunflower, daisy, or sun design. The bowl portion is 10" wide and 3 1/2" tall. It is in very good, gently used condition with the normal scratches and scuffs you see on vintage aluminum. The base is marked WISCO over an outline map of Wisconsin. MBR.