About this item RJ45 keystone punch down jack, female to wire, ideal for in-wall installation in network projects. Includes a wire cutter tool to push the wires into the slots. Compatible with Cat7/Cat6/Cat5/5e Ethernet cables; recommended use with CAT6 Ethernet cable to avoid speed degradation. Use with single gang outlet boxes and mounting brackets (not included). The jack can be removed from the plate. Dimensions: 4.5 x 2.7 x 0.8 inches.