Jul 27, 2021 · RYOBI introduces the 18V ONE+ Cordless 41/2 in. Angle Grinder (ToolOnly). The ONE+ 41/2 in. Angle Grinder offers cordless convenience and the power of 6500 RPM for fast and precise work. This tool offers a host of userfriendly features, such as onboard wrench storage, the comfortable GRIPZONE overmold, and a 3position side handle to help reduce fatigue.