4 Pcs/lot Stainless Steel Door Window Silent Nylon Pulley Wheel Sliding Door Fittings Glass Door Sliding Rollers (Size : Groove wheel),64mmNylon mute wheel, the noise is less in real experience, this pulley has a good mute effect, roller pulley is matched, nylon wheel body is smooth, noise is small, experience is goodSolid roller, uniform force and strong load bearing capacity, cylindrical roller, large contact area, load capacity, smooth pull, no fear of heavy weightThick frame, selected stainless steel material, outer frame is made of selected stainless steel material, durable and corrosion resistant, rust resistant, durable and long service lifeThick Connecting Rod, Heavy Duty Thick Stainless Steel, Heavy Duty Thick Stainless Steel Connecting Rod, Sturdy Material to Replace Durable and Long Lasting Using ExperienceSelf-leveling, small obstacles do not affect rolling, self-leveling design of pulley, small obstacles can be used smoothlyNote: The data are all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.