This is a 103-piece wooden nuts & bolts building set from Imaginarium's Architecture-themed Blocks product line. It is suitable for children aged 3 years and above.  The blocks are made of wood and were manufactured in China.

The set is missing the follwing 12 pieces 1 green screw, 2 red screws, 2 yellow bolts 3 green bolts, 3 red bolts, 1 three hole wooden piece making the total 103 pieces.