The Primex 66M Series Connecting Block System is used in equipment rooms or in remote and intermediate wiring closets to connect voice or data wiring to customer premiseequipment.Blocks are molded with quick-connect 66-type clips for ease of installation and proven termination reliability.Main FeaturesA66M1-50 includes two 25-pair designation stripsRequires industry-standard 66 block termination tool for punchdown