The item is a set of 4pcs 9W 365nm UV lamp replacement tubes, which are suitable for 9W or 36W nail UV lamp dryers, and can also be used in single bulb lamps and larger lamps. U-shaped bulb tube is great for nail gel curing, and its wavelength is visible light, to the eyes. Therefore, it is really a wonderful UV lamp tubes set for choice.Features- 4 pieces of the item in one set will be sold together.- Color: as shown in the pictures.- Material: durable glass.- Length: about 16.3cm.- Power: 9W.- Wavelength: 365nm.- and Lamp Bulb Tube for Nail Art Dryer UV Lamp Light.- U-shaped bulb tube is great for nail gel curing- Suitable for 9W or 36W UV lamp dryers- for UV light tubes installed with UV lamp dryers- Can be used with various kinds of UV products- Suitable for professional nail salon, studio use or home use- Wavelength is visible light, to the eyes- Pls note that it is not suitable for induction lamp machine, only for hand-operated switch machine.