Knob Size: 1.2 x 1cm/0.47" x 0.4"(H*D); Color: Silver ToneType: Cup Cover; Product Name: Cup CoverMaterial: Stainless Steel; Package Content: 1 x Cup CoverDimension: 8.5 x 2.7cm/3.3" x 1"(D*H); Capacity: 0Net Weight: 34gMade of stainless steel material, with round design.Just put this lid on your cup, it will seals in the heat, keeps your stuff hot and fresh.Can be used on jars and cans too.