ER11 Collet Chuck 1/4in for CNC Milling Chuck Lathe Tool Holder Engraving Machine Spindle Motor Spring Collet

This is an er11 collet for 1/4 inch cutters. Very handy for cutting foam and things of the nature. It fit the collet well, runs true. It is quite hard to remove from the nut as the snap ring is sharp but it can be done with a little work. Overall, I'm pleased. Remember, I'm cutting foam so if you are using very thin resharps, they need to run exactly centered and Very fast of you will break cutters in less than a second. Your mileage may very.

Seems to be working as expected

Fits exactly

I can't comment on the tolerances, but it fits my ER11 spindle & .25 inch end mills.

Arrived quickly!Does what it is supposed to do

Good enough quality for my hobby CNC no noticable runout.

I purchased this so I use 1/4" bits with my 4030 ProVer. It works great, but do yourself a favor by getting another nut to go with it, they are a pain to change collets out of the nut, especially getting the 1/4" out to go back to 1/8".

My cnc unit only came with a 1/8 insert. This 1/4 fit my motor perfectly and allows me to use a lot of sturdier bits in my cnc.This is a must have accessory for stock cnc motors under 300w.