The Canning Rack from PL8 is designed to keep your glass jars elevated above the bottom of the pot, allowing for even heating. Silicone bumpers keep the delicate jars from bumping each other while in the boiling water. The reversible rack can hold seven pint size jars on one side or 4 quart size jars on the opposite side. Fits most standard stock pots. Made of silicone and stainless steel. Dishwasher safe.