The magnifier is made entirely of acrylic It weighs just 18 grams It offers two magnifications The first x 3 from a round lens with a diameter of 50 mm The second x 6 from a 10 by 20 mm lens The second lens is shaped like a rectangle and is housed in a holder. • material: acrylic • dimensions: 125 x 57 x 6 mm • weight: 18 g.