UNHO 5 in 1 Pro DIY Leather Craft Sets Adjustable Stitching Groover and Creasing Edge Beveler to Sew Crease Leather Tools Professional grade tool for cutting hand stitching grooves Used for running over completed stitches and grooving the leather edge to make excellent appearance of the leathercraft The groove width can be adjusted freely according to your requirement Perfect union of wooden handle and stainless steel groove This groover is easy to adjust. Just loosen the chuck, adjust the blade, and retighten. No tools are needed.excellent for free hand grooving