Dolphin Super B connector DC-1000S Sealed B Connector Industry's most reliable connection with their unique design and tine structure. They reduce costs, will not corrode and do not require insulation stripping of most wire gauges before insertion. Accepts 16-24 gauge wires. They also allow for connection testing without stripping wires for faster installations with less clean-up time. It is recommended to strip the insulation of a 16AWG wire. Positions wire easily with the unique funnel-entry design. UL9001 and UL approved (E172979)