The metal strainers are stainless steel, and the cloth items are listed as unbleached cotton cheesecloth. One cheesecloth entry also lists polypropylene as a material.
Available outer diameters in these listings include a 4.5" wide-rim style and multi-size sets that include 4.3", 3.5", 2.8", and 2.1" sizes.
Pack sizes shown include 2-piece and 4-piece packs for strainers, and 4-piece or 6-piece packs for the cheesecloth options.
Listings describe fine woven stainless-steel mesh and micro-perforations (one micro-perforation diameter listed as 0.08") designed to trap food particles, hair, and other debris while letting water pass.
Handheld mesh strainers are used for straining soups and sauces, draining cooked pasta and vegetables, rinsing fruits/vegetables and fine grains, sifting or filtering impurities, and straining thicker items like yogurt, lumpy gravy, or juice with seeds.
The cheesecloth listings indicate a precut 20" x 20" size and a Grade 100 weave (listed as 40 x 50 threads per inch). Descriptions call them 100% unbleached cotton, though one bullet field lists polypropylene.
Listings describe wide rims and shallow baskets that fit most sink drains and garbage disposals, plus smooth curved edges or built-in fit features to help the strainer sit securely and catch particles at the drain opening.