Hole saw D. 75mm cut, 4mm carbide tipped with drill and spring. The flat cut and carbide-tipped cutting edges allow for repeated regrinding. It features a replaceable center drill and an ejector spring for the drill core, suitable for material thicknesses up to 4mm for unalloyed steels and up to 2mm for stainless steel. From 31mm diameter, it includes a specially hardened holder. The drill body measures 12mm with a cutting depth of 4mm.

Application note: Use high-quality cutting oil when sawing metals; do not use cutting oil when sawing cast iron, and add petroleum when sawing aluminum.

Further technical information: Designed with a drill bit and spring.