Nothing will ruin a good swing more than dirt-filled grooves. Not only is essential spin taken off the ball, but the smallest amount of dirt build-up can take your shot up to 10 yards off line! And that my friend is the difference between putting for birdie and scrambling for par. There is an answer to this illness. Call in the Groove Doctor. The sharp spike end cleans grooves with surgical precision, while the brush keeps the rest of the face and sole pristine and ready for your outstanding shot-making abilities. Handy clip attaches to bag. Groove spike comes with protective cover.