Reamers 1.Available of Nikel-Titanium or Stainless Steel 2.Size/ISO:08-80 3.Length:21mm,25mm,28mm and 31mm 4.Package:single or assorted sizes15-40 or 45-80; All packages come with 6pcs/box 5.Characters: Loose spiral design with three cutting edge; The great advantage of this instrument is the excellent debris transportation.