Mainstays 8 oz Glass Canning Jars, 12 Pack Set includes 12 half pint mason jars, 12 gold-colored canning lids, and 12 screw-on bands, all packaged in a sturdy cardboard tray with dividers for safe storage and transport Each small canning jar holds 8 ounces or 1 cup, making them ideal for jam, jelly, sauces, honey, desserts, party favors, and candle making Each glass mason jar measures 4 inches tall and 2.8 inches in diameter (0.32 lb.) Compact size perfect for easy handling, kitchen storage, and gift giving Made from durable, BPA-free, food-grade glass suitable for hot fill, pressure canning, and water bath canning methods for safe food preservation Regular mouth opening allows for controlled pouring, mess-free filling, and simple cleaning; compatible with standard regular mouth mason jar accessories Airtight two-piece metal canning lids and rings create a secure seal for long-term food preservation and freshness Smooth-sided glass jar surface is ideal for custom labeling, pantry organization, and creating professional-looking homemade products Embossed measurement markings provide accurate portion control and simplified recipe scaling Glass jars are dishwasher safe; lids and bands recommended for hand washing Bulk 12-pack offers excellent value for home canners, bakers, crafters, small businesses, and meal prep enthusiasts