Dual-Thread Design: These lamp finials are uniquely designed to fit both 1/8 IP (3/8") and standard harp thread with 1/4-27, providing versatile compatibility for most table and floor lamps. Premium Material: Crafted from solid metal with a polished and plated coating, these finials are resistant to oxidation and rust, ensuring long-lasting durability. Easy Installation: Simplify your lamp setup by easily screwing these finials onto the lamp harp after installing your lamp shade—no additional tools required. Sleek and Durable: With a smooth surface free from burrs, these finials not only enhance the aesthetic of your lamps but also offer enduring performance. Package List: Each set includes Ball Lamp Finials for Lamps Top Knob, meeting your needs. QWORK