Feature●Set of 2●Size: Set includes inner diameter 3.8mm and inner diameter 4.5mm●Weight: 1.6 oz (43 g) per piece●Material: Stainless Steel, Plastic●JAN: 4589635175056Description Tip: Set of 2 types: 1.5 inch (3.8 mm) and 0.2 inch (4.5 mm) inner diameter; Can be used for each suma unit and cassette; Please check the special screw type before using.