1.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 groove edge.

2.Groove sharpener is precision ground and engineered to exacting tolerances to ensure that it does not compromise the R&A and USGA rules regarding width and depth. Fantastic results on both 'v' and 'u' shaped grooves.

 3.GROOVE SHARPENER 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 & grit within the grooves that have built up over time. It comes with two different cutting ends, one is U shaped, the other V shaped, you choose which one to use.

4.Instructions: Clean the grooves with soapy water, Hold the Groove sharpener at 45 degree angle and without applying too much force use 3 drawing strokes on each groove. clean the club and apply 1 more drawing stroke with little more force. your club is now ready for more spin and greater control.

5. Made in the china from a high grade precision tool steel  Vacuum Heat Treated with a maximum hardness of 65 Rockwell