Hole saw D. 50mm cut, 4mm carbide tipped with drill and spring. This product features flat cut and carbide-tipped cutting edges that allow for repeated regrinding. It includes 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. It is designed for diameters starting from 31mm, with specially hardened holder, drill body of 12mm, and 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: Design includes drill bit and spring.