RiteAV RJ11 Phone Black Punchdown Type Keystone Jacks are easy to install since they include a color-coded, integrated wiring diagram, which yields a hassle-free termination. Terminated cables are plugged into the front of the jack and bare wire is punched down on the back of the 110-Type, 90 Degree Punchdown Block using a punchdown tool or IDC tool (not included). The snap-in dust cover/retention clip ensures a dependable, corrosion-free connection. The sturdy construction ensures a long service life and the fabrication delivers timeless style. The Cat3 multipurpose jacks are ideal for use with basic telephone installations, replacements and updating antiquated systems. They can also be used in low speed data network applications, which makes them even more adaptable. We offer a variety of Keystone Coupler Configurations, along with different styles and colors, so please check out RiteAV's full line of Wall Plate Components, Preconfigured Wall Plates that include the most popular inputs and the accompanying cables to connect it all together. The 10 pack is a smart, economical choice when needing to purchase multiple jacks since it saves you money buying in bulk as well as numerous trips to the hardware store.