Magic Metal Layered Spike Studs Stretch Cuff Bracelet BC10 Matte Black Edgy Punk Bangle Fashion Jewelry Ships from the USA Spikes Bracelet. Three luxurious layers of matte black studs give any look an edgy, dangerous vibe. Spike Size: 1/2 inch. Bracelet Width: 3 inches. Stretches to fit. Makes a perfect gift. Search Magic Metal Jewelry for more jewelry styles.