The DeWalt 20V Max Brushless Cordless 4-1/2" Grinders, Nos. DCG407 and DCG408, feature overload protection, mesh screens that help prevent debris from entering internal components. and an efficient brushless motor. The grinders can accommodate 4-1/2" wheels and include a Type B guard for grinding and a clip-on guard to convert the Type B guard for cutting operations. The grinders are available with a slide switch (No. DCG407) or a paddle switch (No. DCG408).