The fixed pulley wheel is labor-saving and super silents, it can slide smoothly to good movement of the rope and the rope from twisting The flat mount pulley is alloy and plated on surface and sturdy, strength and stability Our Small Pulley Block Pulley Wheel ensures smooth and quiet, making it perfect for heavy duty tasks Equipped with screws and expansion pipes, the wall mounted pulley is simple to use Widely apply to the industry and household for handling and moving, also suitable for electric rolling door accessory and electric ceiling pully, Manufacturer: RUINBNC