Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: I  want to get this grinder for a metal pole derusting project that I have at home before I repaint the pole. I thought that buying the Dewalt cup brush here to use on the grinder would be the best way, rather than trying to do it with a grinding wheel. What do you think? Will I need some sort of adapter or will that cup brush just screw right onto the grinder spindle?
Document: The dewalt ones i got have a 5/8&#34; hole, they do work on it but you have to manually center the wheel on it. I would recommend if you need the tool for daily use, I would spend some more and get a makita or similar priced one.
The Hitachi G12SR3 4 1/2 Inch Angle Grinder is a bargain for the price. It's solidly-built and is powerful enough to cut through metal with the right cutting wheel (I used a DeWalt metal cutting wheel). I basically bought this to cut down some metal shelving units that were too tall for the work area I'm in.
I typically use the grinder for less than a minute, but it takes me 5-10 minutes from taking it off the shelf to putting it back.I would also like to be able to store some accessories in the case, such as a wire-brush and abrasive-flap-wheel. This case only has enough room for the 5-grinding discs it comes with, and nothing else.
I bought this to replace a similar but different brand name grinder that failed. The Hitachi is about the same size, but appears to be much better made. Fit and finish is much better than my old one. This is a very handy tool for grinding rust, welds, and rough-finishing metal parts and brackets. Larger grinders are too big and heavy to use for any length of time, and corded tools never need to swap batteries in the middle of a project.
I bought this grinder for the simple fact that skilsaws with carbon disks on them are heaver than they used to be. The spindle is uncluttered and spins true and the guard is of the collar type that from the looks can be placed 360 degrees with the use of a hex head . Note : this is the keiko plant meaning made in Hitachi's china plant , i would have bought it regardless but if it were inline with my trade i would want this sort of information.
If you use one frequently I'm sure there are better quality grinders available. (Hence the 4 stars). However, if you only have an occasional need or want to have one of these on hand for when you will, I don't think this will let you down.
Great grinder for the money I use mine to make special cuts on tile or grinding metal before welding. I am buying another so I can dedicate them for one use
I bought this about a year ago and every time I use it I like it more. This tool feels solid, powerful, and comfortable to hold. I particularly like the fact that I can move the handle to either the right or left side depending on what I'm cutting and where I want to hold. The carying case is great too and keeps everything, including wheels, in one handy place. Drop a cut-off wheel in this and say goodbye to your Dremel.
This was my first time using an angle grinder. I was tiling my bathroom floor and needed to cut a circle for the toilet flange in a 20&#34; porcelain tile. According to YouTube videos, an angle grinder was the way to go. I ordered the Hitachi and the Dewalt DW4725 cutting wheel. Both came together in the same package in 2 days. Perfect shipping from Amazon as usual :)  Being a new grinder user, I was a little aprehensive. Decided to go for it.
I bought this angle grinder for work as a welder and fitter. We usually only use grinders to grind off welds or smooth out burn marks. I figured this Hitachi would be an awesome tool for the job. I unboxed the grinder the day I got it and went to work. About half way through the work day, the oppertunity arose for me to test it out. After only 3 minutes of light grinding, this product went from 5 stars to 1.
Answer: yes