54 MM RO GOLD CAP is the top choice of our customers for packaging products in our lead-free glass jars and bottles. We offer these cool closures in bulk with our glass containers that are 100% microwave and dishwasher safe. We offer customization options along with our caps and closures which helps people to recognize a product much faster enabling a brand to create a loyal customer base for themselves. These closures enhance the look and feel of our lead-free glass bottles.