This Prusa I3 reinforcement improves the rigidity of the 3D printer structure. It is usefull to eliminate the effect of vibration and deformations on the printed layers. In addiction to the printed parts, you will need: 1 x M8 threaded bar 33cm; 2 x M10 threaded bar 43cm; 4 x M8 nuts; 4 x M8 washer; 8 x M10 nuts; 8 x M10 washer;