【WIDELY USED】Standard mounting dimension G1 ¼" (thread outer diameter is 40-40.5mm). Suitable for sink holes with a diameter of 41mm to 55mm. The universal sink strainer fits most wall-mounted, countertop, or drop-in sinks and is compatible with European standard size piping. Ensures a secure seal with no water leakage after installation. Prevents small items such as necklaces or rings from falling down the drain. 【EXCELLENT MATERIAL】Made of high-quality SUS304 stainless steel, brass, and silicone. The pop-up sink drain is sturdy and durable. The materials and design complement a variety of decor styles, fixtures, and bathroom accessories. 【EASY INSTALLATION】No tools required. Install the bathroom drain in just a few simple steps. The wide copper cap provides a large contact area, allowing for easy hand assembly. Note: Measurements are manually taken; please allow 1-3 cm variation. Color may vary slightly due to lighting and display differences. Actual product may vary slightly from the image.