This is a very high quality set manufactured by LOZ; It is 100% compatible with all leading micro bricks</br>Superb product for developing small motor skills with children over 5 years old</br>Made of ABS - the same material used by the leading brands of building bricks</br></br>Product Description</br></br>Loz Micro Blocks?? Buckingham Palace Model?? Small Building Block Set?? Nanoblock Compatible (1540 pcs)</br><br/>http://www.amazon.com/gp/product/B00DQ8PZ1M