This is a door knocker labret monroe lip piercing jewelry with a 4mm black jeweled bead. Door knocker inner diameter is 8mm. The comfortable flat end measures 5mm. The size is 16 gauge and length is available in 10mm - 3/8" inch or 8mm - 5/16" inch. The entire piece is nickel free. High quality 316L surgical steel body jewelry. Brand: body jewelry Age: Adult Condition: New