18 Series Commercial Grade Male Detachable Plug, Cam-Type, Crimped, Ball Nose, Cable Range 2/0 to 1/0 AWG, 220 Amp - Brown Rhino-Hide Single Pole Cam-Type Connectors are designed for easy assembly and disassembly without special tools. A thermoplastic screw is used to tightly secure the contact inside the insulating sleeve, making assembly, disassembly and field repairs effortless. The plugs use plastic locking and reinforcement rings molded into insulating sleeves and receptacles ensuring the integrity of the connection. Under severe stress and load conditions, these rings will not melt, break or crack.