Specification - Input: 12V; Support up to: 1100Amp Current. 4PCS 1100A heavy duty pure copper jumper cables boost clamp car battery charger clamps. | Feature - These 1100 amp Heavy Duty Battery Jumper Cable Clamps are couple battery terminals with positive and negative terminals (red/ black). Equipped with incredibly strong jaws that will never fall off once they're clamped down properly. | Good Material - Jumper Cable Clamps was made of copper (head part) with good electrical conductivity, with insulation handle for convenient use. | Advantage - Our car battery clips are easy to use with portable, lightweight, durable and reliable characteristics. | Application - The jumper cable clamps are ideal for battery chargers (solar panel, electric fence, etc.) or running applications from a car or leisure batteries (camping ,boat, electric fence, etc.)