This threadless tops mimics the look of Naruto's Shurekin. If you're looking to create a curated themed look, look no further. It is such a fun piece to add to your collection. It is made from ASTM F-136 titanium. 25G titanium pin, measures about 4.7mm in length. Fits most threadless posts. Top piece measures about 8mm x 8mm. Sold individually (top piece only).