Description Are you looking for a professional and affordable nylon pulley for window screens? Are you looking for a sturdy, trusted tool that can do multiple jobs at once? If yes, look no further! Our screen nylon pulleys have to meet your needs. It is one of your best options. Features - Material: Nylon, metal. - Size:3.50X1.00X1.00cm/1.38X0.39X0.39in. - Sturdy PP and Nylon material and good workmanship ensure its durability and practicality. - Has excellent track sliding performance, allowing us to open and close doors and windows easily. - The design of these pulleys is reasonable, and the operation method is simple, saving time and effort. - These single-wheel pulleys are widely used in sliding doors, windows, cabinets, etc., and they are easy to slide without jamming. - This nylon pulley is small and flexible, strengthens load-bearing, wear-resistant and durable.Package list: 20 x Sliding Door Rollers