Insulation Knife w/ holster by Hultafors Save Liquid error (product-badge line 32): -Infinity% $14.95 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart A Insulation knife with a 50 mm wide, flexible blade and scale. Its serrated blade makes it easy to cut through all types of insulation wool. Grip-friendly handle made from impact-resistant PP plastic. Features With holster The blade is made from 50 mm wide carbon steel. A serrated blade makes it easy to cut through all types of insulation wool. Both the handle and holster and made from super-durable PP plastic.