tööriista kiiret vahetamist võimaldav kinnituskoonus (morsekoonus, meeterkoonus jt) (vt Morsekoonus; meeterkoonus), a machine tool shank (taper) used to hold the tool in place and allow quick changes in tooling; the are several types of tapered tools in use which all work on the same principle: Morse taper, metric taper etc. (see: Morse taper; metric taper)