Unfortunately I've broken one on my Aldi/Workzone one and have robbed a "replacement" from my reserve "dremel" as i bought 2 at the same time. And the Dremel collets are not compatible. Otherwise these things on the left of this image
Also see:
You might have to do some machining; collets are cheap, but don't come with specifications . A few minutes with a lathe, and you can make a matching chuck for available replacement sets... after you buy and measure 'em up.
With any luck it looks as though Dremel collets will work with a change of retaining cup, for Workzone WCT135 or WWCT135.
8mm and .75mm fine pitch. Tried F connectors and metal 3.5mm jack covers but wrong pitch. Tried the cable collet cap from a 2 pin Lemo FGG.OB connector and looks as though its a perfect size without any mechanical changesThe Lemo retaining cup is suitable for Dremmel collets in a Workzone minidrill. Just the across-flats is smaller, requiring a smaller spanner to lock down - I can live with that.
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