What Sets the URH 20-28 ApartSDS-Plus Quick-Change Chuck: Unlike traditional keyless jaw chucks, the SDS-Plus drive mechanism allows the bit to slide back and forth freely inside the tool, transferring maximum pneumatic impact force directly into the masonry bit.3-Mode Versatility:Rotary Drilling: Smooth rotation without impact for wood and metal (using an SDS-to-standard chuck adapter).Hammer Drilling: Simultaneous rotation and heavy pneumatic hammering for deep holes in concrete and brick. Chiseling (Hammer Only): Rotation disabled for tile scraping, plaster removal, and light concrete chipping. 28mm Concrete Rating: Capable of tackling larger anchor holes, rebar penetrations, and core drilling that standard 13mm impact drills struggle with.