HSS: Fully hardened high speed steel for use in metal, aluminum, and no-ferrous metal.
HSS milled teeth : For longer life and fast cuts in metal
Fast and even cuts in thin and thick metal.
T Shank for AEG, Bosch, DeWalt and Hitachi Jigsaws
Progressive tooth spacing, for fast cuts, long life, in sheet metal 2-10mm, non-ferrous metal 2-20mm, stainless steel 1.5-3mm, plastic 1.5-30mm, fiberglass 1-20mm