Adaptor, according to standard ISO 12164-1, type HSK, form A, size 100. Brand Walter.
Available in NCT®, size 63 with article code A100M.7.100.80.63.HSK, as well as in sizes 63 and 80 with references HTFT312263 P63 and P80.
For mounting toolholders, according to standard NCT®, brand Walter.