Check out these precision machining parts China images:
Collet Chuck and Collets ER25
Image by tudedude
Myford 7 Fit Collet chuck
For those wondering what the white/silver lines are around the slots on the chuck – it’s where I ground away the sharp edges. These Chinese Items are very well priced, but they are made to a price so de-burring is not part of that price 🙂 but they are well made where they need to be.