Silent nylon roller Our wheel is equipped with silent nylon wheels, no scratches on the sliding, soft and stable. You can open and close the door comfortably and quietly. High Quality MaterialSliding door roller made of high strength nylon, high speed bearing and high quality alloy base plate. The surface is coated with multiple layers of baking paint, thick and not easy to rust, wear-resistant and durable for long-term use. Adjustable height The retractable upper wheel is convenient for the ;installation of door shutters, height adjustable suitable for a variety of interior doors and windows. Cylindrical catheter, horizontal rotation structure, glides smoothly without jamming. Scope of delivery 6 sets of heavy-duty sliding door rollers measuring 85 x 45 mm in the dimension of the sliding door fittings. Classic design with black and white color that will perfectly match your doors and windows.It is recommended to install 2-4 pulleys per cabinet door. Multiple applicationsVersatile sliding wheels ideal for cabinets, windows, closets, cupboards, display cases, etc. Mute Sliding Door Wheel for Cabinet Smooth nylon wheels allow you to open and close the door smoothly and quietly. Nylon and alloy premium quality guarantee excellent performance even after prolonged use. Automatically cleans and refuses dust accumulation and stagnant, which effectively prevents dust from entering and is more durable. < p>Product features: Materials: nylon and alloy. Wheel diameter: 30 mm. Dimensions of the mounting plate: 85 x 45 mm. Hole diameter: 6mm. Colour: Black. Package: Set of 6 sliding door rollers lucky meet < p>lucky meet Note: The data is all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the object actual received shall prevail.