Rebaydo 2pcs P15D-25-3 Male Solderable Caps are designed to replace old, corroded, or rusty light bulb bases in vintage and specialty lighting applications. Constructed from durable metal materials, each cap features an easy-to-solder design with two bottom contacts for reliable electrical connections. The base measures 15 mm in diameter and includes a 25 mm retaining disc with 3 side retaining tabs for secure installation. Dimensions are approximately 0.75 inches overall length, 0.59 inches base diameter, 0.59 inches inner diameter, and 0.98 inches (25 mm) retaining ring diameter. Ideal for repairing or rebuilding existing light bulbs requiring a P15D-25-3 male solderable cap.