Modular connector wiring blocks are wiring solutions designed for rack, wall, cable, junction box, and frame mounting options, allowing for multiple wire pairs to be connected without having to strip off the insulation before making a connection. Commonly referred to as punch down connectors, they are selected by wire pair capacity, dimension, mounting features such as legs, panels or screw holes, as well as additional features such as lacing straps, label holders, mounting hardware, and shielding.