Hypertherm Kit:Hd4070/Ht4400 Cool Sys Upgr - 128968 by Hypertherm Save -8% $851.15 SKU HYP128968 Hypertherm - SKU HYP128968 Add accessories to hypertherm kit:hd4070/ht4400 cool sys upgr - 128968. 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