BUSHMANCRAFT/Silver Magnetic Hat Clips for Metal Golf Ball Markers (Type #3/2 pcs & 4 pcs) Strong Golf Magnetic Hat Clips REAL 18K Gold Plating (NOT a pseudo gold) You will get total 4 Magnetic Hat Clips Perfect Match with Your All Kinds of Metal Golf Ball Markers 0.4 inch (10mm) diameter 'Strong Magnet' is applied.