We may receive a commission on purchases made from links. Ryobi's line of corded and cordless grinders comes highly regarded by customers, with many four- and five-star reviews touting just how well ...

Angle grinders come in sizes, denoted by a number that refers to the maximum diameter of the grinding wheel or disc it will handle. For most DIY projects, a 4-, 4.5-, or 5-inch disc will suffice.