30Pcs Blank Challenge Coins: Handmade workmanship blank coins with frosted texture and threaded edged for engraving, these gold coin blanks meet your daily DIY crafting needs to make your own precious coin collections or a ideal gift to your loved one. Blank Coin Material and Size: Laser engraving coins are constructed with premium quality metal with gold plated,These metal blank coins for engraving are approximately 1.57 inch (40mm) in diameter and 0.11 inch (3mm) in thickness. Meaningful Handicrafts: Creating personalized challenge coin blanks with patterns and words. Laser engraving blanks can become DIY keepsakes: medals, badges, charms, necklace, pendants, bracelet, pet tags or keychains when it combined with different hooks and rings. Personalized Collectible Gifts: Make unique gifts with these blank medals to friends, family, colleagues, coworker, employee, DIY lovers, military coin collectors, veterans, charity on Birthday, Christmas, Thanksgiving, Graduation, Holiday, Anniversary. Easy to Make DIY Crafts: Round metal blanks are suitable for fiber laser engraving, metal engraving or manual engraving. There are different effects on different machine. It is recommended to slowly increase the power until you get the desired effect. Colour:silver Material:Metal Package Contents: 1set x blank coins for laser engraving Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.