Prodos Step 2Printed Parts Joint inner bracket (part 4) x 1 Lower leg frame(part 5) x 1 Joint outer bracket (part 6) x 1 Other Parts (shown at twice the scale of the printed parts) 7g servo x1 8mm socket screw x 3 12mm socket screw x 1 M3 nut x 2 M3 washer x 4 radial ball bearing x 2 Toolsallen wrench