Store › NEW Custom Knife Factory Copperhead Superconductor / Zirc Core Bead Image 1 of 3 Image 2 of 3 Image 3 of 3 NEW Custom Knife Factory Copperhead Superconductor / Zirc Core Bead $149.95 These feature Superconductor and Zirconium. Size: 3/4" x 11/16" Weight: 0.48oz Materials: Superconductor & Zirconium Quantity: Add To Cart Added! These feature Superconductor and Zirconium. Size: 3/4" x 11/16" Weight: 0.48oz Materials: Superconductor & Zirconium