Cable Tray Roller suitable for long term use, ensuring smooth cable pulling and avoiding cable damage. Multi function clamping design can clamp on the inside, outside and corners, the large circle design provides better compatibility and adapts to a variety of bridges and cable specifications. Strong clamping: Electrical Wire Pulling Tool is designed to be sturdy, strongly clamp the cable, and is not easy to loosen, ensuring a stable and reliable wire laying process. Quick adjustment: Auxiliary Wire Pulling Tool butterfly screw design can quickly adjust the clamping force, easy to operate, easy to install and adjust. Smooth Rolling: Cable Tray Roller, practicality and beauty, easy to use for Construction Site. Specification: Material: Nylon, stainless steel or Stainless steel; Size: Circle diameter 6.5cm/2.56inch, Clamp 2.5cm/0.98inch; Package Includes: 1 Cable Tray Roller or 2 Cable Tray Rollers; Color: As shown in the picture.