Print two of either bag_clip_smooth or bag_clip_textured and two of bag_clip_spring.
The springs need 50% infill, but the clips do not.
bag_clip_textured provides a little bit of texture on the handles to keep the clip from sliding out of your fingers when opening.
I had a request for a clip without the "teeth", so I added clip2_textured.
Put the two halves of the clip together so that the "teeth" mesh together, then slide the springs on from the sides until they click into place.
I was tired of printable clips that didn't have any grip strength when closed. The springs will already have some displacement on this clip when it is closed, so it can grip a single sheet of paper.