Hendrick Motorsports Team Store ExclusiveTurn your ordinary ball marker into a commemorative coin! Our Challenge Coin features two removable, die-struck metal ball markers that are held onto the coin with a heavy-duty magnet. The coins sport a colored outer ring and are 1.5? in diameter, 4.5 mm thick and weigh 22.5 grams. The substantial size and weight make it an ideal gift to celebrate special events, honor years of service and, of course, golf tournaments.