High quality: the pulley panel is made of high quality stainless steel, durable, not easy to deform, the lower wheel adopts brass bearing, which is more stable and bearable, smooth and quiet.Pulley design: The design the concave wheel is consistent, the bearing shaft is smooth and round and there are no scratches on the slide. Each activity will bring its own cleanliness, the accumulation of waste dust.Perfect size: the pulley plate is 74mm long, 37mm wide, the thickness of the thickened plate up to 20mm, the pulley diameter 33mm, the thickness 9mm. Suitable for cabinets and kitchen cabinets of different styles.Easy to install: quick installation button, the upper guide wheel adopts a copper button, the retractable upper wheel is convenient for installing the door leaf. door. Cylindrical catheter, horizontal rotation structure, smooth sliding without blocking.Package includes: 4 sets of sliding door wheel sets, which can form four pulleys. It is recommended to install 2 to 4 pulleys for each cabinet door. It is an ideal choice for cabinets, windows, wardrobes, cabinets, wardrobes, etc.