Stainless Steel, smooth polished. Flat for easy manoeuvring on one end (handle-like) and fully, smoothly insertable on the opposite end, these sounds will bring many happy hours to you and yours! Available in different sizes.Diameter of the dilators:Size 18 = 6,0 mmSize 20 = 6,7 mmSize 22 = 7,3 mmSize 24 = 8,1 mmSize 26 = 8,6 mmSize 28 = 9,3 mmSize 30 = 10 mmSize 32 = 10,7 mmThe sizes are stamped on the handle.Insertable Length: approx. 22 cmTotal length: approx. 28-29 cmDiameter: approx. 6-10,7 mmMaterial: Stainless Steel