16G(1.2mm) Rainbow Titanium IP Steel Circular Barbells Horseshoe Rings w/Spike Ends (Sold in Pairs) Metal: Titanium Ion Plated/Surgical Steel 3mm spike ends on the 5/16" & 4mm spike ends on the 3/8" Sold in Pairs 16 Gauge(1.2mm). 5/16" or 3/8 diameters available. You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!