This Mason Jar set includes two pieces, each with a capacity of 300ml (10.1 ounces). The jars are made of clear glass and feature a classic design with a screw-on metal lid that provides a tight seal to keep contents fresh. They are perfect for storing and preserving a variety of foods, such as jams, jellies, pickles, and sauces. The jars are also great for crafting projects or for use as a stylish drinking glass. With their compact size and durable construction, these Mason Jars are a versatile and practical addition to any household.