These T8 Lamp Holders are good for electricians, DIY enthusiasts, and professionals who need to replace or install LED integrated fluorescent tubes. They can be used in a variety of settings, including homes, offices, classrooms, and shops.SpecificationColor: WhiteMaterial: PC Plastic, CopperTotal Size: 31.6 x 18.4 x 43mm / 1.25 x 0.72 x 1.68 InchInner Dia.: 16.5mm / 0.65 InchWire Length: 24cm / 9.45 InchPackage List: 50pcs x T8 Lamp HolderAdvantageMade of flame retardant and high-temperature resistant PC material, this product features excellent durability and safety. Additionally, the copper contact design that ensures superior wire insertion performance. The non-shunted design ensures safe and reliable operation.InstructionSimply connect the wires to the terminals on the fixture or ballast. Make sure to match the polarity correctly to avoid damage to your LED tubes. These T8 Lamp Holders are suitable for a wide range of LED integrated fluorescent tube replacements and are suitable for both residential and commercial applications.NOTEEnsure that the power source is turned off to prevent any electrical hazards. Double check the polarity and make sure to match the positive and negative terminals correctly.