Packing: 5pcs Material: copper contacts + PBT material Sturdy, highly durable and environmentally safe, long service life Stable performance, ensuring long-term reliable use Plug and play function, very easy to install Easy to convert from r17d to g13, compatible with t8 and t5 lamps, a versatile choice for a variety of lighting needs Can be used in a variety of settings including residential, commercial and industrial environments Ideal for a wide range of homes, businesses and industries, it's a reliable and cost-effective solution for all your lighting needs