Before print it you need buy bristle set from there https://is.gd/jom7ZK or analog. Printing: material: PETg/ABS/PLA, fill: 100%, STL: deterror cap x1, deterror base x1, deterror klin x9. Assembly: - insert the bristles into the grooves through one groove - cut sandpaper to the size of the shield (I recommend G120) and insert into the grooves, securing it with a wedge - put the side cover - insert the M8x70 bolt and tighten with a nut (do not forget about the washer) The device is ready to use! You can see this device in action there: https://is.gd/C5RIgF