Open Box teenage engineering OP-1 Brick Shaft Level 1

Brick shafts are LEGO® compatible shafts that you put on any of the knobs. Now you may mount any lego part onto your OP-1. Why not put on a big lego rubber wheel for that extra grip? Or build your own motor driven programmable LFO together with LEGO® MINDSTORMS? The brick shaft comes in four colors and lets you experiment with any parameter. It supports any idea you may have that involves LEGO® bricks. Available in 4 colors.