7' (180mm) angle grinders are suitable for larger jobs where the ability to cut thicker materials is required. These 7' angle grinders tend to operate at a slower RPM when compared to smaller angle grinders, which means they can run for longer periods before overheating. In addition, because these angle grinders can accept bigger cutting discs than smaller grinders they are capable of making deeper cuts. Builders and stone merchants that work on larger jobs often find these larger-sized angle grinders useful.

• Disc diameter is the key choice to make when selecting an angle grinder. They range in disc diameter size from 4' (100mm) - 9' (230mm) with the 4.1/2' (115mm) & 9' (230mm) grinders being the most popular choices. Smaller grinders rotate the discs at a higher speed. These tools all have a 7' disc diameter.

• Choosing your power source: 240v tools are used with normal mains power whilst 110v tools are used on construction sites for safety reasons.