Educational Engineering Building Kit.London Skyline with 3430PCS micro blocks.Please pay attention that the smallest block is just 4x4mm. It is more challenging and difficult than the building blocks of traditional size,and requires more patience and carefulness of people.This mirco block set is an interesting entertainment game,suitable for gift for adults & teens.A great showcase for your home or office Great Gift.This detailed and challenging architecture model kit makes a cool creative. Perfect for adults and teens as a birthday gift or a great gift for Christmas, New Year, Christmas, Birthday,Easter, Halloween, Hanukkah, STEM, perfect gift Good parent.The London Skyline is made up of 3430 PCS and comes with a paper installation manual and bags to make building even more easy and fun.Enjoy the joy of collaborating with your family.The No. on the bag is not a building sequence No.You need to open all bag and pick out the blocks according to the IM High quality.Londun Skyline building block micro block set with 100% ABS plastic bricks are made of high-quality green materials with bright colors, good flexibility and not easy to damage. It is smooth surface and rounded corners make it safe for family Attention:Every piece of our product packing will not be confirmend until 3 tests have been carried out.If your sets are still missing piece,please contact us from Amazon.We will send the missing parts to you for free,thanks in advance Educational Engineering Building Kit.London Skyline with 3430 PCS micro blocks.Please pay attention that the smallest block is just 4x4mm. It is more challenging and difficult than the building blocks of traditional size,and requires more patience and carefulness of people.This mirco block set is an interesting entertainment game,suitable for gift for adults and teens.A great showcase for your home or office.