Here's a 316L surgical, stainless steel, 14 gauge barbell measuring 1 long, adorned with a flat Batman symbol! This exquisite piece of body jewelry is produced of the highest quality material and expertly crafted. What this means is: Wayne Tech may have had something to do with it. Anyway, this Batman symbol barbell is perfect for...well....boring through your tongue! And now...a little bit about surgical steel, body jewelry-316 Stainless Steel is the preferred steel where bio-compatibility is required (such as body implants and piercings). The L means that the carbon content of the alloy is below 0.03 percent, which reduces the sensitization effect. 316 steel has .08 Max carbon content while 316L has a .03 Max carbon content. Stainless steel does not contain, corrode, or rust as easily as ordinary steel. Though it will not oxidize or turn black, it is still not stain-proof.