Drilling Diameter:8mm to 4mm/0.31'' to 0.16''. Total length:117mm/4.61''. Material:High-Speed -Steel. Use with a variety of tool holders,this reaming drill improve processing efficiency. Recommended for use with corded high-rpm drills.
After an hour of unsuccessfully searching tool accessory websites I found it here in about two minutes. The bits arrived quickly and work great at 1500rpm. I ordered two to have a backup not knowing that they come in two packs already. I'll be set for years now!