Thank you for viewing. For outdoor use. The manufacturer and material are unknown as there are no markings. It sticks to a magnet. Top row, left: depth 6cm, diameter 13cm Middle: depth 3cm, diameter 14cm Right: depth 6cm, diameter 12cm Bottom row, left: depth 2cm, diameter 11cm Middle: depth 1.5cm, diameter 12cm Right: depth 1cm, diameter 14cm Some items have been used, some have not, and some have scratches while others do not. Please understand this before purchasing.