What You Will Get4 Pcs Kitchen sink overflow ring. The outer diameter is 30 mm/1.18 inch and the inner diameter is 20 mm/ 0.79 inch, suitable for overflow holes of about 20 mm-23mm. Premium MaterialOur bathroom sink hole round overflow covers are made of ABS plastic material, with good quality chrome finish. Plating layer with good adhesion fine, uniform color, excellent corrosion resistance, ensure surface keep shiny. Easy to InstallMeasure your overflow hole before ordering, easy and convenient to match your hole. our sink overflow rings are easy and convenient to match with taps, you simply need to push in and click in to place, put a little soap on them can help slide in easily without breaking the feet of the cap cover, easy for you to install. Keep the Surface Gloss and BrightOur basin trim overflow drain cap covers are designed with good adhesion, classic color and nice corrosion resistance, which will ensure a more gloss and bright surface Specifications: Material: plastic Color: as the pictures show Size: approx. 30 mm/ 1.18 inch in outside diameter, approx. 20 mm/ 0.79 inch in inside diameter, and approx. 15 mm/ 0.59 inch in Package includes: 6 x Sink overflow rings