Made of high-quality food-grade stainless steel, odorless, strong and durable, not easy to damage, rust and corrosion resistant, BPA-free, smooth edge, does not cut fingers, reusable. The ultra-fine filter holes can filter the tea with high efficiency and retain all tea leaves, allowing you to enjoy a perfect cup of tea without tea residue in your free time, allowing the tea leaves to expand fully and mix with water, so that the aroma of the tea leaves spreads faster, giving you a great experience when drinking tea. Perfect size, designed with two handles, easy to hang, not easy to fall, suitable for almost all cups and teapots, large tea infuser allows the tea to filter quickly, and the lid keeps the good taste from evaporating, keeping the water warm. Small and portable, suitable for mountaineering and camping. This ultra-fine pore filter can be used to brew coffee, filter black tea, green tea, rooibos tea, scented tea, etc. No other solid liquid material can pass except water, suitable for daily use at home as well as in cafes, tea houses, restaurants, hotels, etc. This ultra-fine pore filter is easy to use and clean, only requires a detergent and warm water to clean without leaving a tea stain on the surface.