For a classic style, SKS has paired gold two piece metal jar caps with clear glass mason jars for a durable and versatile set when purchasing glass jars for canning. The gold two piece jar caps include a plastisol lined inner lid that, when properly heated and cooled, will create a hermetic tamper evident seal and threaded bands for a secure fit. When in need of glass jars for canning, mason jars are a top choice due to the highly recognizable style, wide mouth openings, and durable construction for long term storage. Be sure to test these gold jar caps and glass jars for canning with your canning and preserving methods to ensure the best compatibility.