The new, patented EZ-RJ12/11 Connector simplifies twisted pair terminations by allowing the wires to be inserted through the connector and out the front. This allows the technician to easily verify the proper wiring order prior to termination. Use the EZ-RJPRO HD™ Crimp Tool (P/N 100054) for single cycle crimping and trimming of the excess wire. FCC compliant and UL rated. Made in the USA. Patented.For use in telephone & security installations.For specialized telephone installations & communications equipment.For applications requiring custom/specific wire configurations.