Mini collet set. inner hole to fit motor is 2 mm. can be easily fit with any 2 mm shaft size motor like 365. 380. 390 etc.
RS365/380/390 Motor 2mm Hole Collet Drill set
Drill collet sizes - 0.5,1.0,1.5,2.5,3 mm
Package Include -
5 x Drill bit collet
1 x Drill connector set
1 x L key