Check the listing for details. 30Pcs 4mm Strain Relief Cord Connector Cable Bushing Boot Sleeve. Condition: New. Listed at 13.56 USD. What is this?The strain relief cord connector is used to protect electrical wires and cables, and is widely used in homes, offices, shopping malls, and other occasions. Power cord strain relief boot sleeve can protect the USB cable, network cable, power cable, etc. of the computer, prevent the wires from getting tangled together, maintain a clean environment, extend the service life of the electrical wires, and protect the cables from damage.What will I get?Strain relief cord connector, is in size of : 4mm/0.16 inch inner dia, 6.5mm x 2.1mm/0.26 inch x 0.08 inch(D*L) slot sizeIn the package of: 30pcs x Strain relief cord connectorIs there any advantages of the product?The strain relief cord connector provides additional protection for the electrical wires and cables of electronic devices such as computers, audio systems, and TV.