Pricking iron? Chisel? Looking for the perfect stitch.
Leather Craft Diamond Pricking Iron Set Diamond Chisel - Etsy Canada
Kyoshin Elle 2x5mm Leathercraft Tool Pricking Iron 5mm 2-Prong Diamond Point Leather Stitch Punch, to Pierce Stitching Holes in Leatherwork | Fruugo ZA
Craft Sha Leathercraft Pricking Iron 6x2mm Sewing Punching Tool 6-Prong Diamond Point Leather Hole Stitch Punch, for Straight Edges in Leatherwork クラフ ト社 革工具 6本ヒシ目打 20mm 8246 : Amazon.ca: Everything Else