I bought an ER32 - R8 collet set years ago on Ebay, the quality is probably not that good but they seem to do the job for me, 15 collet set with R8 chuck and wrench for around $110 USD.
I also bought a square and hex collet block to go with the ER32 collets, handy to fit round stock in a mill vice and cut four or six sides to make nuts, bolt heads etc. about $50 USD for a pair of blocks
Cheers
Jim
I also bought a square and hex collet block to go with the ER32 collets, handy to fit round stock in a mill vice and cut four or six sides to make nuts, bolt heads etc. about $50 USD for a pair of blocks

R8 Collet Set, R8 Collet Set with 15 PCS ER32 Collets R8 ER32 Collet Chuck Set | eBay
Are you looking for a great clamping tool?. It will be ideal for your machine tool operation! 15 PCS ER32 Collets (0.0004" Accuracy): 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16".
www.ebay.com
Cheers
Jim