Six nylon rollers provide smooth movement of cable and prevent cable damagePull pin makes opening and closing to insert and remove cables a simple one step operationAdjustment clamp allows the CR25 to be swiveled and/or rotated into any positionHeavy duty 12 ga cold rolled steel construction for durability and zinc dichromate finish prevents corrosionUp to 20 network cables can be pulled at one timeEasily attaches to wooden framing members using a lag bolt and the hole in the mounting bracket of the CR25May also be used with coax, NM, small size THHN and similar cables