A must have tool for everyone who hand stitches. Finally a stitching groover design that makes sense! The groover blade is on the same axis as the handle which provides better control and downward pressure on the blade. The easy to use chuck firmly locks theblade in place and the grove width adjusts from 1/16" to 1-7/16". More than a groover it includes a modeling spoon for creasing, decorative borders and figure creasing work too.