T he Tension bowl is assembled from three steel parts, which are locked together due to the tension in the curved sheet. No screws, welds or any other fasteners are used, except the materials own force and desire to bend back to its original flat form. Material: Zinc plated steel - iridescent color SPLIT40cm diameter, height approx. 6 cm. SPLIT This item is in stock and will be shipped from the Netherlands within 6 weeks. EU: £15 Global: £25