These quick disconnects have insulation around their barrel and terminal that helps prevent accidental touch and stop wire strands from falling out. Their fully insulated body protects the connection from electrical noise, short circuits, and corrosion damage.

These quick disconnects have insulation around their barrel but none around their terminal where they connect. Their partially insulated body helps prevent wire strands from falling out, deter accidental touch, and protect the connection from short circuits, deterioration, and corrosion damage.

These bare quick disconnects have no insulation and provide an unobstructed view of their barrel for more precise crimping and to allow inspection of the wire contact and tensile strength. Non-insulated bare quick disconnects are suitable for higher voltage applications but should never be used in corrosive environments or anywhere the connection might get inadvertently touched.