Accusize Industrial Tools3 mm to 20 mm by 1 mm Er-32 Collet Set, 18 Pcs/Set in Fitted Strong Aluminium Box, 3350-0585

The runout on the set I bought was .001 to .003". (My ER32 chuck has a measured runout of .0002"). I will next try the set from OrangeA sold here on Amazon, as a video review showed them to be much more accurate.

For the price, they're great. They arrived clean with no burrs.