The E-Z Jumper kit from Carolina Custom Machine is a way to ensure safe and sure entry and jump starting when your battery fails. Or to provide easier jump starting access for cars with hard to reach batteries. It's also great for jump starting other cars. The jumper block is dielectric plastic approximately 1 1/4" X 4". The small size allows installation just about anywhere. The lead terminals are stamped "P" for positive and "N" for negative. Five feet of cable is included, with terminals crimped on each end. The cable can be cut anywhere within the five foot length and secured in the terminal block, allowing for varying lengths of positive and negative cable.