TOOL STEEL • DICCIONARIO INGLES.COM • Definition of Tool steel

... detachable heads and broomstick handles—more like dwarf halberds than ice-axes; and at least two workmanlike axes were indispensable. So the head of an axe was sawn to the pattern of the writer's out of a piece of tool steel and a substantial hickory handle and an iron shank fitted to it at the machine-shop in Fairbanks. It served excellently well, while the points of the fancy axes from New York splintered the first time they were used. "Climbing-irons," or "crampons," were also to make, no New York ...

— The Ascent of Denali (Mount McKinley) - A Narrative of the First Complete Ascent of the Highest - Peak in North America • Hudson Stuck