68535: Free Wheel Hub Black
32850: Building Block 15 X 15
fischertechnik I-Strut with hole 45 for optimal structural strength. I-Strut with bore 45, silver
36293: Angle Girder 120 Black
36923: I-Strut with Bore 75 Black
31982: Spring Cam
35076: Statics Building Block
31981: Angular Block 15 Red