Sluban M38-B0509 Black Hawk Helicopter Toy Building Block 439 Pieces This is a very high quality set manufactured by Sluban. It is 100% compatible with "Lego" The product contains 439 bricks. The package size of the this product is about 17*2.5*13 inch. This set is designed based on the real helicopter. This block set contains 4 mini figures soldiers each one is unique. The helicopter has weapons and rolling wheels. The tail and .the wings are flexible. Made of ABS - the same material used by "Lego". This material is safe and will keep its shape and dimensions for years without warping. Superb product for developing small motor skills with children over 5 years old