Hello,

I need to purchase a set of (or individually) ER20 precision collets, with a runout of 5um or less.

These seem to be readily available but differ in price from around £5 to £45 each depending where you look, although they state they are the same spec??

My question is really where can I purchase these in the UK and know that I am getting a good brand / quality without paying a fortune.Or are the cheap ones just as good or even what brands, if any, are any good?
I am looking at buying a full set of 12 or as and when I need them depending on the price.

Any suggestions or recommendations of places to purchase these from in the UK would be really helpful.

Thank you