Stainless Steel Golf Ball Marker 1-1/4" - Wolf Design - Personalized Our 1-1/4" diameter x .050 thick golf ball markers are made in the USA from high quality magnetic stainless steel. They are not magnets but the special alloy allows them to hold tightly to a golfer's hat clip. We have developed a non-glare satin finishing process that enhances the laser engraved designs and personalization to show well in any lighting condition. We laser engrave designs using a patented Swiss laser fusion process that is so durable it has been used by NASA on the International Space Station and Hubble Space Telescope. Your engraving will not be affected by rain, heat, cold, salt water, chemicals, solvents and can't be rubbed off. Personalization: (1) Initials only please