R66MOD series are quick-clip blocks with modular jacks that provide the user with a flexible interconnect for the distribution of voice or data pairs to RJ11 modular jacks. These compact blocks mount in the same footprint as the R66M 150X block and can be wall-, backboard-, or frame-mounted, or these can be mounted on a standard 89-type bracket (Emerson R891 Series and R89B). Each block is constructed of UL 94 V-0 rated plastic, and the RJ11 jacks are made of impact-resistant plastic with fifty micro-inch gold plated contacts. The units can be used anywhere throughout a network where raw-ended solid copper wire must be converted to modular jacks. These are available in a variety of configurations: two- or four-contact modular jacks can have eight, twelve, sixteen or twenty ports; six-contact is available in eight, twelve, or sixteen ports.