These brackets allow you to screw down the P1P to a wooden table or base. In my experience, this results in fewer artifacts from vibrations. Print these with around 5 or 6 perimeters for best results. If you print in PLA, there is a chance they will slowly deform due to the prolonged stress. The holes are made for countersunk #9 construction screws but other screws can be used with little to no modification.