Hypertherm Duramax HYAMP Gouging Nozzle, 5/pk - 420001 by Hypertherm Save -8% $59.66 SKU HYP420001 Hypertherm - SKU HYP420001 Add accessories to hypertherm duramax hyamp gouging nozzle, 5/pk - 420001. Close Add Your items total will automatically update after adding options or accessories. You can edit your selections in the cart. Select Options & Accessories Quantity Add to cart