Mustad Demon Perfect Circle Hooks, 3X Strong Size 10/0 - 39950NP-BN-10/0-25Up Demon perfect in line circle hook. Mustad's Wire Technology And Nor-Tempering Process Means That Hooks Are Lighter And Up To 20% Stronger. UltraPoint Technology Means Sharp, Durable Hook Points That Resist Rolling And Stay Sharper Longer.