Features: 【Broad Compatibility Design】This dc5.5x2.1mm female connector employs not conducting spacer tube soldering technology, ensuring seamless connectivity with a wide ranges of devices. 【Robust Durability】The ABS plastic housing delivers exceptionally abrasion resistance and impacts resiliences, extending the product's service life. 【Convenient Installation】Toolless assembly enables rapid installation, simplifying user operating. 【Efficient Current Transmission】An optimised soldered structure guaranteeing stable current flowing while minimising power dissipation. 【Safe and Reliabled Performances】Rigorously tested design ensures operational safety, preventing short circuits and overheating. Specifications: Component: ABS Process: Precise welding technology not-conducting spacer tube Parameters: DC5.5x2.1mm female connector The placeholder tube is a faux battery. It has an empty shell inside and without electricity. Practicality: It is suitable for battery storage boxes for various consumer electronic devices. Length about 11cm/4.33in Color: Optional Package Includes: 1PC Not conducting spacer note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.