EyeBrow Ring Straight Gun Pistol 16g 1/4" Tragus Helix Cartilidge Body Accentz 316L stainless steel and is 1/4" in length (6.5mm). 316L stainless steel and is 1/4" in length (6.5mm). this cleverly made piece is a pistol instead of the standard threaded balls.this cleverly made piece is a pistol instead of the standard threaded balls.