Hypertherm Duramax HYAMP 45/65Amp Shield - 420172 by Hypertherm Save -8% $20.84 SKU HYP420172 Hypertherm - SKU HYP420172 Add accessories to hypertherm duramax hyamp 45/65amp shield - 420172. 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