These make hanging double sawtooth frames so easy! You just put one on each sawtooth and your level on top of the frame (the kits actually come with mini levels if you don’t have one); raise your frame so the center of the art is about eye level (which will bring it to within that range between 55-60” off the floor that’s the general rule of thumb); press on it so the little points puncture the wall; and then when you pull the frame away, the holes for your nails are already started! Takes under a minute! LTKHome