Brushed stainless steel and fiber-reinforced plastic painted with polyester gelcoat and polyurethane enamel
Needle and thread: 59 ft. (18 m) high x 50 3/8 in. (128 cm) diameter
knot: 19 ft. (5.8 m) long x 19 11/16 in. (50 cm) diameter
Piazzale Cadorna, Milan, Italy