Reduction sleeves according to the document apply to tools with morse taper shanks, type a, according to DIN 228-1 or tool shanks according to DIN 2207.
DIN 6364:2000 history
2000DIN 6364:2000-12 Reduction sleeves with external taper shank 7/24 for morse taper shank with tightening thread
2000DIN 6364:2000 Reduction sleeves with external taper shank 7/24 for morse taper shank with tightening thread