The suction cup is made of PVC+ABS+MOS+silicone; The bracket is made of superior stainless steel; and elegant, removable and repositionable, convenient to use. Supporting capacity: 5 kg; No more slipping and falling when rubbing against the thing. No screws or brackets or silicone or drills; Simply turn to lock and turn counterclockwise to unlock for cleaning behind or when moving; You can also fold the tray out of the way when cleaning pots, maximizing sink space. Stainless steel and chrome plating ensures the item will not rust, corrode or discolor. The suction works best on ceramic tile, glass, mirror, stainless steel, acrylic, laminate and any non-porous with a glossy finish. No tools required, no drilling, screws: no holes in walls. Load capacity with simple and elegant design. Rack: 13cm (L) x 9cm (W); Suction cup: 6cm (diameter) x 3cm (thickness) Note: This suction will not attach to porous surfaces. No wood, no marble, painted walls or grout lines Material: PVC + ABS + MOS +