Dremel 4485 Collet Set (clamping nut, collet chucks 0.8 / 1.6 / 2.4 / 3.2 mm) (Tools)
I have a Dremel Set with all the trimmings, plus a - bought chuck - for standards rather bulky. Any collets are unnecessary with it, but are very practical. This reviewed on here collets Set includes four collets (including lock nut, which was alread