1,Sturdy and Durable: The pulley is made of stainless steel and nylon, which is not easily bent, stable and does not fall off, and is durable. 2,Easy Installation: The nylon pulley is easy to install and use, slides smoothly without jams and does not make a lot of noise. 3,Wide Application: This nylon pulley is widely used in sliding doors, sliding windows, cabinets, etc. This pulley can replace damaged pulleys and is highly practical. 4,Long Term Use: This nylon pulley uses gravity and skating to hang items to reduce the load and can be used indoors or outdoors for long periods of time. 5,Small and Lightweight: This nylon pulley is very smooth, small and light, and with 10 in a set, which easily meets your multiple installation needs. Item Type: Nylon Pulley Material: Nylon, Stainless steel Diameter: Approx. 19mm or 0.75in Thickness: Approx. 4.5mm or 0.18in Hole Diameter: Approx. 6mm or 0.24in, 4mm or 0.16in Total Length: Approx. 44mm or 1.73in Width: Approx. 20mm or 0.79in 10 x Pulley Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.