Feature:1. GREAT INSULATION: Used in various types of car stereo and safety devices to prevent short circuits by insulating the end of the wire. 2. EXCELLENT CONNECTION PERFORMANCE: The nylon crimp sleeve connectors make wiring easier; this closed-end connector with inner tube ensures a perfect connection between the wires. 3. GOOD QUALITY MATERIAL: Uses nylon and aluminum tinned, thermoplastic molding of engineering plastic, hard, firm, tightly packed, has good heat preservation, and does not age easily. 4. EASY INSTALLATION: Peel the rubber from the end of the wire, insert the sleeve, and crimp with a crimping tool. Transparent tube allows visual inspection of inserted wiring. 5. WIDE RANGE OF APPLICATIONS: Suitable for various types of car stereo and safety devices, very practical and convenient. Specification:Item Type: Closed End Cap Model: HX0100634 Material: Nylon + aluminum Parameter: ModelL1(mm)L2(mm)Dia 1(mm)Dia 2(mm)Wire RangeQuantity(pcs) AWGmmCE-1X6.817.82.56.322-160.5-1.5100CE-2X7.0 20.0 3.0 8.0 16-141.5-2.5100CE-5X8.0 25.54.0 10.0 12-104-6100. Package List:100 x CE-1X Closed End Cap 100 x CE-2X Closed End Cap 100 x CE-5X Closed End Cap