Skip hammered disc titanium top - threadless images slider SKU: Hammered Disc Titanium Top - Threadless Sign-up to see price This Hammered Disc Titanium Top is made of high-quality titanium and it available in two sizes: 4mm or 5mm. Product Details: Material: Titanium 6AI-4V-Eli ASTM F-136 Top Size Options: 4mm, 5mm Threadless style 13 anodized color options