Sumnacon&reg; Leathercraft Stitching Groover Creaser Tools 7 in 1 Adjustable Stitching Groover and Creasing Edge Beveler Kits with Wodden Handle 7 in 1 Professional leatherwork tool for stitching groover and creasing Easy to adjust, better control and downward blade pressure Made of steel with wooden handle Length: 14cm/5.6" ( Approx), Groove Size : 1mm, 3 Replace Edge- Beveler Tips width :0.8mm, 1.0mm, 1.2mm Multiple bits as a stitching groover, edge creaser, bevel leather edges, rough edges trimmer and stitching-hole spacer.