Dog Tag Bottle Opener This is truly a unique dog tag. Make a fashion statement and open bottles at the same time with the integrated bottle opener. The dog tag is made from heavy duty chrome plated metal with the 3D urethane encased design as shown. The dog tag is approximately 2.2" (5.6cm) x 1.2" (3.1cm) in size. This item also includes a 24 inch chain which can be easily shortened if desired.