Feature 1. Made of ceramic and metal, durable and high temperature resistant. 2. Ceramic body holder for inserting LED, CFL or halogen bulbs. Comes with removable bracket and ring for use with lightweight models. 3. Micro spring mechanism secures the bulb firmly, with high heat resistance and high temperature resistance. Specification: Material: ceramic, metal Type: G9 lamp holder Package Contents: 6 G9 lamp holders.