Bulk Blank Military Dog Tags Black, 10-pack These Blank Military Dog Tags are made of stainless steel which does not cause skin discoloration and is hypoallergenic. Not suitable for engraving. Perfect for parties and craft projects. Blank Dog Tag Dimensions: 2" x 1.125". Thickness - 0.04. Does not include ball chain. Other necklaces can be used. Each dog tag has a 3mm single hole. Proudly Made in the USA.