Angle grinders are handheld grinding and polishing tools used in metal fabrication yards and construction sites. They use petrol, electricity or compressed air and grind with a replaceable abrasive disc to remove excess material from metal pieces. They are also used to grind stones, sand, polish pads, and wire brush wheels as well as cutting plastic plasterboard. Some grinders have 2-position side handles; others have 3-position side handles while the rest have multi-position side handles. Different angle grinders have different power consumption capacities ranging from 500W to over 2500W depending on their purposes and can be corded or cordless. Some also use Li-Ion batteries.
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