Features: brand new and high quality It is hidden in the board to save space, beautiful to use, and does not take up space. The maximum load is 40kg, strong and stable. Fully solid and thick screw, high hardness and not easy to bend, multi-layer electroplating surface treatment, excellent anti-rust effect. The surface is integrally injected with glue, and the plate pin hexagonal prism design is easy to install without loosening. Suitable for fixing partitions, wooden brackets, racks, etc. Specifications: Material: Iron + Plastic Bearing Capacity: Up to 40kg Expansion Tube Size: Approx. 72x12mm/2.83x0.47inch Shelf Support Size: Approx. 145x10mm/5.71x0.39inch Package Includes: 5x Invisible Shelf Supports note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.