The DEWALT ATOMIC 20V MAX 5/8 in SDS Rotary Hammer Tool Only DCH172B is a powerful and reliable tool designed for drilling and hammering tasks. With a bit size of 5/8 inches, this rotary hammer is suitable for a variety of applications in the construction and industrial sectors. The DEWALT brand is known for its high-quality and durable tools, making this product a trusted choice for professionals in need of a versatile and efficient drilling solution.