The groove sharpener is not only used for cutting away bent-over metal in club grooves and re-grooving but also removes the grit and dirt. It is suitable for golf irons, approach wedges, other golf utility clubs, etc.SpecificationColor: BlueMaterial: Aluminium AlloyCutter Head Type: Square (including the head cup)Cutter Head Size:: 8x0.6 mm/0.31x0.02 inch (Width*Thickness)Overall Size: 110x12 mm/4.33x0.47 inch (Length*Diameter)Packing List: 1 x Golf Club Groove SharpenerAdvantage1. Made of aluminum alloy material, durable, which is easier to clean the grooves.2. The groove sharpener is suitable for iron U-shaped/V-shaped grooves.3. Non-slip grip is suitable for both right and left-handed golfers, and comfortable to use.4. The head cup can be covered directly after use, preventing scratching.