The screw-in lamp base holder is designed to meet the needs of both professional electricians and DIY enthusiasts. These lamp holders offer a reliable solution for repairing or upgrading your lighting fixtures. Their robust construction and easy-to-use design make them an excellent choice for various applications, from household lighting to industrial settings. Features -Color:Black -Material:Bakelite, alloy -Size:5.70X5.70X5.30cm/2.24X2.24X2.08in -Note: E27 -Effortless installation: the lamp holder design ensures a simple and quick installation process, making it convenient for users -Stable and secure: this lamp holder provides a stable and secure fit, preventing any loosening or instability -Versatile lighting: suitable for a variety of indoor environments such as homes, offices, malls, and hotels, catering to different lighting needs -Efficiency improvement: replace only the lamp holder instead of the entire fixture, saving time and enhancing work efficiency -great build: made from great materials, this lamp holder is designed to withstand longterm use, offering durability and resistance to corrosion Package list: 5 x lamp socket