World's Best Grandpa! Laser Engraved - TruGroove Golf Club Groove Sharpener - Improved Backspin and Ball Control - Wedges and Irons - with 2 Free Color Matched Ball Markers Made in USA Do not replace irons and wedges  re-groove them and extend their life Works on both U-grooves and V-grooves on all irons, wedges and utility clubs Aircraft aluminum body, hardened tool steel tip, extra long knurled handle for better grip Complies with USGA and R and A regulations Made in USA