These 16G threaded replacement bioplast barbells are hypoallergenic, and you can trim them to the perfect length with a sharp pair of scissors! bioplast is increasingly a preference over surgical steel as its light weight, super comfy and will work with all 16G threaded jewelry - its self threading! Add some flex to your tongue ring collection today! Barbell Size: 16 Gauge (1.2mm) Barbell Length: 5/16" (8mm) Brand: FreshTrends Age: Adult Condition: New