Quantity   Component name
10 × 3D printed parts $10
13 × 5/16 inch ball bearings $4
5 × M3 30mm bolts
6 × M3 lock nuts
1 × M3 20mm bolts
1 × M4 40mm bolt
1 × M4 lock nut
1 × M8 30mm bolt
1 × M8 lock nut
2 × M4 60mm bolts
3 × M5 20mm bolts
3 × M5 nuts (lock nuts optional)
1 × knarp $2
1 × handle bar grip $5
1 × 23mm diameter bar $8
1 × brake cable $4
1 × mountain bike brake lever $10
1 × spring Electronic Components / Misc. Electronic Components