We hope you are all doing well. I’ve placed this New Item on the “Special Items” of our website. You can use this item on the last hole on a corner or adding a card pocket, and other parts too, so as to not damage the edge of the leather. We’ve developed this item to pursue a more beautiful finish for stitching. We’ve made this new item’s prong thinking about the shape of the Diamond Hole Punch’s prong and also the thickness of the needle and thread when sewing. Using Tool Steel, tempered, black coating for rust-proof. It’s very simple but important. Please try it out !