Carretillas Para Ventana Hardware Black Painting Steel Sliding Door Wheels Sliding Window Wheel Roller High-quality steel sliding door and window rollers with nylon pulley wheels, designed for smooth, quiet operation with a modern aesthetic. Suitable for various sliding applications including doors, windows, and furniture casters. Key Attributes Material Steel Load Capacity 20kg Wheel Color Custom colors available Bearing Type Ball bearing Thickness 1mm Product Advantages