General description 10 pulleys in one set, made of iron and plastic, featuring ball bearings for smooth and durable operation. This roller block is suitable for sliding doors, window cabinets, wardrobes, bookcases, showcases, and other office furniture. Technical specifications Wheel diameter: 19 mm Inner dimension of width between two rollers: 20 mm Maximum load capacity: 40 kg Suitable for U-shaped rails Compatible with doors up to 2.5 meters in height Other information Please check the size of your furniture before purchasing to ensure compatibility. The rollers include a small support to properly position and wedge the door before fixing.