Easy to use punch-down type modular RJ-11/12 Keystone jack. To be used with keystone wall plate or panel, suitable for standard phone connections. Up to 3 line phone support. Wiring diagram on clip..North American wiring conventions use the paired BLUE middle connectors for line 1, the TAN/ORANGE connectors for line 2, and optionally, the GREEN outer connectors for line 3.Installation Note: When using our 4 and 6 hole Decora Plate Inserts, these inserts can NOT be installed side-by-side as the hole inserts are spaced too closelyEstimated ACTUAL Quantity Available: 381. Should you need more stock than our advertised quantity of 50pcs, please click the CONTACT SELLER link and let us know how many you need and we will update the TOTAL QUANTITY available.