Comes as a single unit.
 
This product is a straining bag made from food-grade nylon that can hold a capacity of 4 litres or 1.05 gallons. It is designed to fit a 1-gallon pail and can be used to strain the juice from loose fruit pulp before or after initial fermentation or as a beer, wort sparging bag or large hop and grain boiling bag. The bag has a wider opening, making it easy to pour into and use for steeping or boiling grains, herbs, berries, or hops. It is easy to clean, washable, reusable, and durable. 
Product of Taiwan