Features: 1.Made from a high grade vacuum heat treated precision tool steel with a hardness up to 60 on the Rockwell scale. 2.Comes with two different cutting ends. One is U shaped, the other V shaped. You choose which one to use. 3.Precision ground and engineered to exacting tolerances to ensure that it does not compromise the R&A and USGA rules regarding width and depth. 4.Fantastics results on both V and U shaped grooves. 5.Works by sharpening the rolled over metal edges that have collapsed in the grooves of your club whilst at the same time removing the particles of dirt, sand and grits within the grooves that have built up over time. 6.The grooves in your irons are designed to enable ball control and spin. Frequent club use can not only fill the grooves with debris but can also damage the grooves edge. The grooves sharpener tool works by cutting away bent over metal in the grooves of your clubs and re-sharpen grooves. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Description: 1.Product name: Hexagonal ditch cleaning tool 2.Weight: product net weight 33.5g 3.Dimensions: length 112mm, 6-point head diameter 21.5mm, shaft diameter 12mm Package List: 1 x Golf Club Grooving Grinding Tool（With Brush）/1 x Golf Club Grooving Grinding Tool（Without Brush）