Description Metal Earth models require a pair of flush cutters and chain nosed pliers. (NOTE: We tried to assemble the models with the wiggle & pry method of removing the parts from the matrix, but ended up bending and breaking some pieces in the process.) This set of tools from Metal Earth is everything you need to build their models successfully. Metal Earth Kits assemble into tiny dinosaur skeletons from two 4.5″ x 4.5″ laser cut steel sheets. Assembly generally takes 2-3 hours and the completed models stand roughly 3 inches (7.6cm) tall and 6 inches (15.2cm) long . Recommended for ages 14 and up.