5/8"-11 Thread Angle Grinder Extension Shaft Set Connecting Rotary Rod Car Polishing Adapter of 3pcs, 3 inch, 3.9inch, 5.5inch

Great quality haven’t used yet but can see they will be very useful

I bought them thinking that they were likely going to be a problem and that the length was going to cause balance issues etc. Turns out they work like a charm. I was grinding inside of my jeeps frame rails and these worked perfect.

Haven't used them yet but it's what I ordered

I didn't know anything like this existed, but I've needed it several times. The threads were good with the exception of they all had chrome plating which interfered the first time they were threaded. After working the threads a little back and forth, they all thread up just fine. All of mine are straight and true. These will be great for a small cup brush, wire wheel, polishing disc, and maybe even a flap wheel. But I'm seeing people put grinding wheels and cutting discs on these, which seems foolish. No way I'd put a little wheel of death on this thing. If one explodes, it's going everywhere. It would be really easy to side load with the longer extension, which would be a recipe for disaster with a cutting wheel.

Fit my 4 1/2 inch angle grinder just fine no problem. I could see a lot of places this will come in handy.

Very useful and reasonably priced. Almost NO vibration at any speed, even with the longest extension. I did not try connecting them together because they are not intended to be used this way. The fit and finish is sufficient but most of all they are machined for balance.I previously purchased Maxshine brand for $36 and they were so off balance that the tool was unusable. Proof that price is not always an indication of quality.

Nice set. However small extension had little to no threads inside, couldn’t use it if u wanted to!

Performs as expected.