This crocodile clip is powered by 12 volt and 24 volt devices. It is used in emergency situations. Plastic and copper plated metal clamp Red color is positive and black color is negative. A 30 amp fuse ensures safety in the event of a short circuit and prevents damage to devices due to high shock current. Extension cable length: 3 feet / 1 m. FITS MOST VEHICLES - Clips attach directly to the car battery and use high performance devices, protecting the car's cigarette lighter. Alligator clips are made of high quality copper material with strong electrical conductivity. The insulating jacket ensures a comfortable feel and protects you. Rated Current: 100A The metal crocodile clips have the characteristics of rust protection, corrosion protection, oxidation protection and a long service life. The end of each crocodile clip can be connected to the wire by welding. The red and black jacket can help you identify positive and negative charge. The spring made of high quality metal can withstand a greater pressure, which has a strong bite force and does not fall off after clamping. Maximum opening: 25 mm. 2 battery terminals clamp connectors 4-Way Battery Terminal - The SAE battery terminal connectors have 4 posts for cable connection. Designed for multiple cable connections, mainly used for SAE / JIS type A rear car batteries. Robust and DurableThe quick-disconnect battery terminal made of tin-plated copper not only has good conductivity and corrosion resistance, but can also reduce voltage distortion and transmission loss. Dimensions: for wire diameter 5.2 - 7.4 mm (AWG thickness 1 - 4) or cross section 16 - 35 mm². Minimum wire thickness 16mm (5/8") Max. Wire clamp: 9.5mm/0.37", mini wire clamp: 6.5mm/0.25