AiskaerAn upgraded version Professional Aluminium alloy Handle Leather Grooving Tool Edges Filter Adjustable Leather Edge Stitching Tool 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 Be adjusted according to your requirements groove width Perfect union of Aluminum alloy handle and stanless steel groove You can use it do creasing, make 1mm width trench