What can I cut with a 4-1/2 inch angle grinder?

It handles metal cutting, grinding, deburring and wire brushing with the right disc. It is also used on masonry and tile with a suitable blade. It is not meant for large or continuous cutting jobs.

Does it have variable speed?

No. It runs at a single 11,000 RPM, which is the common speed for this size. You control the cut through disc choice and pressure, not a speed dial.

What discs fit this grinder?

Any 4-1/2 inch (115 mm) disc with a 7/8 inch arbor fits. That covers most cutting, grinding and flap discs sold for small angle grinders.

Is it good for a beginner?

Yes, for light jobs. It is simple to set up and use. Wear eye and ear protection and keep both hands on the tool, since it has no soft-start or anti-vibration features.

Can it run on an extension cord?

Yes, but use a heavy-gauge cord rated for the tool's current draw. Long, thin cords can cause the motor to bog down or overheat.

Is it worth it over a name-brand grinder?

For occasional home use, it covers the same basic jobs at a lower entry point. For daily trade work, a name-brand grinder offers better durability, smoother handling and more safety features.