Connect voice and data wiring and provide versatile cross connect points in equipment and telecommunication rooms with Leviton's 66-Clip products and accessories. M Block with Female Connector (66M1-50W) 10in H X 3-5/16in W X 1-3/16in D. Install individually or in pairs in cross-connect system High impact fire retardant UL-94V0 plastic Phosphor bronze quick-connect insulation displacement 66-clips