Compatible With All Major Brands* Work perfectly with all major brand bricks You can mixed play with all major brand bricks an affordable way to increase building options! Pleasant Shopping Experience: The cost of one purchase allows you to get 2 blocks. 20 Piece or more bulk purchases.PLEASE CONTACT US. Manufacturered by Sawaruita. Material Safety Assurance: Made from the same safe durable ABS plastic as the name brands. ASTM certified and CSPIA compliant Perfect Ratio Of Length To Width* 10" x 15" is a very reasonable size ratio. It can serve as a base for building gardens and football fields.