Ingersoll-Rand 3108 Super-Duty 1/4-Inch Pneumatic Die Grinder

• Ingersoll-Rand 3102 Super Duty Composite 1/4-Inch Angle Die Grinder
• Ingersoll Rand 326 Heavy Duty Air Cut-Off Tool
• Campbell Hausfeld MP5200 25-Piece Accessory Kit with Case
• Ingersoll Rand 231C 1/2-Inch Super Duty Air impact Wrench

There is no middle ground, it is one or the other and take it from someone with tendonitis, they feel like hell to use.Thirdly, the fastening tools provided by IR bend very easily. It is full blast at all times. The bottom line is: don't waste your money on these. I bought this die grinder and a ingersoll rand 3102 super duty right angle die grinder 2 months ago for use at my job as a welder. First off most air tools will have something on them to adjust their speed, these being no different except for the fact that they don't work. The screws which are supposed to be able to allow the airflow pressure to be reduced don't work at all. Expect only about 10 uses out of them before you will have to switch to conventional wrenches, metric of course. The cheaper no names out perform the 3102 and 3108 any day of the week.

These 2 die grinders are the worst and most expensive by far in the shop. Secondly, if the die grinder bits are fastened down with enough force where the bits won't fly out of the collet when being used then the ball bearings buzz and rub very strongly. I bought expensive die grinders thinking that they will feel better to use and last longer; don't make the same mistake that I did. These die grinders feel as though they are extremely worn out unless the bit is not securely fastened.