[Material]:The cable tray roller is made of stainless steel and nylon,with thickened bottom hanging,strong,smooth,wear resistant,and long service life [Features]:This stainless steel pulley provides smooth and smooth operation and prevents wires from getting stuck,not easy to damage wires,and you can easily operate the adjustable clamp [Easy to use]:The electrical wire pulling tool is easy to install,saving time and effort,and is more convenient to guide wires,ensuring work efficiency and cable security [Design]:The wires threading tool adopts a roller design,the shaft will roll with the wire,protecting the wire from wear,and the screw can be quickly adjusted to improve work efficiency [Application]:The guide helper laying tool has a strong load bearing capacity and adopts a large open design.It is suitable compatible witha variety of cables,meets the needs of large projects,and is suitable compatible withlong term use Specifications: Material:Stainless steel,Nylon Size: Ring Diameter 6.5 cm/2.56 inch Clamp Mouth 1.8 cm/0.71 inch Note: Please allow slightly errors 1-2cm differences due to manual measurement. Package included: 1x Cable Tray Roller