3D printed model hubs, using easy to cut drinking paper straws as the sticks. Great for testing ideas, or just a fun toy for a budding engineer. Comes with 50 straws to play with - Enough to make a 45cm [18"] diameter dome and plenty of extras to experiment with. Arrives sealed in a printed container. If you need more straws, the hubs minis can be used with most standard (6mm) paper drinking straws.