BUSHMANCRAFT/Silver Magnetic Hat Clips for Metal Golf Ball Markers (Type #1/Bulk/6 to 40 pcs) Strong Golf Magnetic Hat Clips You will get total 20 Magnetic Hat Clips Ball Markers are NOT included. Selling Magnetic Hat Clips ONLY Perfect Match with Your All Kinds of Metal Golf Ball Markers 0.4 inch (10mm) diameter 'Strong Magnet' is applied.