KKmoon ER-32 Collet Chuck Hard Steel Hex CNC Engraving Cutting Machine Lathe Tool Holder Collet Block

Hi, received this part and mounted it in 3 jaw chuck that has .001" runout to check it. When bore was checked, runout on collet hole was over .01". I will have to machine the hex end concentric to the bore to make it somewhat useable. If mounted in a 3 jaw independent jaw chuck you could use it as it comes and set it square. It looks like it was made from hex bar stock that was simply mounted into a 3 jaw chuck and the collet end turned without any consideration to the runout of the bar.

Bought this as I need a collet block. I specifically looked for one that claimed to be hardened so it was durable and would hopefully last me a while. This one is made from standard hex bar stock which I could have made myself; it is not hardened.The nut is hardened but not the block. I gave it two stars as it was reasonably priced and should do the job for at least the short term.

Kk Moon always exceptional quality for the incredibly low price.

Very nicely machined, collets snap in very easily

Accurate and well made. Does the job well