Strong And Safe Clamps: The TOPDC Jumper Cables booster cable has four giant alligator clamps with strong jagged teeth and springs for excellent grip force. The jaws are strong and make connections easy. And the High Peak Jumper Cables has insulating rubber material to prevent electric shock and protect the safety of users | 25 Feet Jumper Cables: The TOPDC 20 Feet Jumper Cables has an extremely long usage distance, which is suitable for use with trucks, SUVs, full-size cars, mid-size cars, and compact cars. The Jumper Cables adopts insulating material to prevent rust, corrosion so effective insulation. The 20 Feet Jumper Cables are suitable for various car models and are powerful helper in emergency situations | UL-Listed & qualified quality: The TOPDC Jumper Cables surface is made with premium PVC which is resistant to freezing, cracking & folding and won’t tangle. Each jumper clamp has undergone rigorous testing and successfully passed UL certification, which is exhibiting excellent performance under extreme temperature conditions (-40 ° F to 140 ° F) | Convenient storage and carrying: The TOPDC Jumper Cables will give away a Carry Bag. When you need to use Jumper Cables, you can always carry it in your bag. When you don't need to use Jumper Cables, you can pack it in a bag and store it in any place. Convenient storage and carrying are truly essential items at home | Quality Assurance: The TOPDC provides you with a 5-year quality assurance and complete after-sales service. The TOPDC are committed to producing better products and providing you with the ultimate shopping and user experience