This is a very high quality set manufactured by Sluban; it is 100% compatible with all leading 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>Sluban bricks construction set crane truck made of ABS for years of use with extreme dimensional stability. Compatible with all leading brick sets excellent for development of small motor skills and learning how to follow assembly instructions</br><br/>http://www.amazon.com/gp/product/B01AROAMWY