BNIB OO Gauge PECO SL-11 Insulated Rail Joiner (Codes 100) (12 pk). SL-11 Insulated Rail Joiner (Codes 100) (12 pk). Insulated rail joiners are required to provide electrical breaks where Electrofrog turnouts are used, for more details see our Wiring the Layout publications Nos 4 and 21.
