Keyhole saw saw dm 75 mm cut depth 12 mm carbide tipped with drill bit and sprin

Flat cut · carbide tipped cutting edges allow repeated resharpening · exchangeable centre drill bit · ejection spring for the drill core for material thicknesses up to 4 mm for unalloyed steel · stainless steel up to 2 mm · from 31 mm Ø with special hardened mounting shank · drill body 12 mm · cutting depth 4 mm · Use instruction: When sawing through metals, use high-quality cutting oil, do not use cutting oil for cast metal and add petroleum when sawing aluminium