High quality set of 8 Pratt sounds with leather case. Pratt dilators are long and slightly bent. The curve starts after 4cm. The dilators are made of high polished stainless steel and have a total length of 29cm. The tips are rounded.Diameter of the dilators:Size 13/15 = 5 mmSize 17/19 = 6 mmSize 21/23 = 8 mmSize 25/27 = 9 mmSize 29/31 = 10 mmSize 33/35 = 12 mmSize 37/39 = 13 mmSize 41/43 = 14 mmThe sizes are stamped in the middle.Total length: approx. 29 cmDiameter: approx. 5-14 mmMaterial: Stainless Steel