High Playability: The building block set is made up of 392 pieces bricks include detailed step-by-step color instructions Great details with assorted sizes and color pieces. Educational Value: This creative stem helicopter building blocks set combines 8 form sets .All of these 8 models could be assembled into one big attact helicopter.The combat helicopter is more than 12 inches long more than 9 inches wide and more than 4 inches high All of these can give your kids endless imaginations. Manufacturered by dOvOb. A Great Gift: It will be a very interesting game experience. The finished product is also a great collection.Wonderful recreation activity Perfect gift for both adults and ages 8 years up children. Note: If you find some missing pieces in your item please contact the seller to show what pieces are missing and the seller will ship the missing pieces to you. High Quality of Mini Blocks: This military helicopter model building blocks set made of original ABS material durable plastic kits. The brick similar to LEGO but not lego.