Hitachi DH18DSLP4 18-Volt Lithium-Ion SDS Plus Rotary Hammer (Tool Only, No Battery) Two-Step speed switch- Power Mode for fast and efficient drilling in larger diameters, and Save Mode to conserve battery power and prevent bending of small diameter bits Idle strike restrictor prevents no-load hammering, extending tool life Bright, base mounted LED to illuminate dimly lit workspaces Quick bit insert for rapid changing of accessories Externally accessible carbon brushes for quick and easy maintenance Recommended battery - 330139, Recommended charger - UC18YKSL