This Carolina Custom EZ Jumper Kit ensures safe and sure entry and jump starting when your battery fails. It also provides easier jump starting access for cars with hard to reach batteries. The jumper block is dielectric plastic and measures 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.