This is a fully 3D printed Hole Punch with exchangeable punching pins, they press-fit into their compartment. There is quite a bit of supports to remove, six on the bottom paart and one big support on the top part. The assembled upper part of the Hole Punch slides in the bottom part. Gently flip the upper part over and your Hole Punch is ready to use. To use it fold your paper in half and mark just a tiny bit of the fold, arrange the fold with the triangle and punch.