DIN 69882-1
DIN 69882-1 Tool holders with hollow taper shanks according to DIN 69893-1 - Part 1: Designation system, technical delivery conditions
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2005
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2005