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 grit within the grooves that have built up over time.<br><br> <b>Features:<br></b> Made of high grade precision steel.<br><br> Easily redefine groove edges qucickly by removing deformed bent over metal.<br><br> Can sharpen all U, V grooves.<br><br> Suitable for all golf irons and wedges.<br><br> Restores grooves to original design.<br><br> Material: The blade Section stainless steel,the outside part aluminium alloy.