These tiles/block toys interlock to allow you to build 3D shapes. Use your imagination to build structures. Print as many as you want in as many colors as you can for more fun. 16 tiles per A1 mini plate. Only 3.6g of filament per tile and and about 11 minutes per tile on average to print. I recommend building at least 32 tiles to allow for building many different shapes, but you can have fun with 16 to start and add more later. Designed for PLA.