Internally Threaded Titanium 1.6mm (14 gauge) curved barbell which will fit attachments with a 1.2mm thread (these are product codes starting JB-QDD) These bananabells are made out of high quality grade 23 Titanium (6AL-4V ELi) and they are available in 6mm, 8mm, 10mm, 12mm, 14mm or 16mm lengths. You can choose from Highly Polished (silver coloured) Titanium or Bronze, Brown, Blue, Ice Blue, Yellow, Gold, Rose Gold, Peach, Pink, Purple, 2 Tone, Rainbow, Teal or Green.