DIN 24°cone connections is according to standard of DIN 3861/ISO 8434-1dimension, it is German DIN(DEUTSCHE INDUSTRIAL NORME) type. Union type require the all tube end size is the same as DIN 3861 required 24 deg cone from tube to tube.
There are 3 different magnetic block shapes total 65 pieces ,including 30*square, 30*triangle, 5*long triangle . Two different random colors on each side of each magnetic tile. Compatible with other similar-size blocks ,like magformas etc.
MNTL Magnetic Building Blocks, 78Pcs Construction Set -Rainbow Building Tiles ToyFamily Leisure: Building structures with families and enjoying the moments of memory making, children can be taught to recognize colors and shapes in recreational activities.