20-Volt MAX Li-Ion Brushless Cordless 1 in. SDS-Plus L-Shape Rotary Hammer (Tool-Only) with 20-Volt Li-Ion Battery 5 AhWith a brushless motor, this DCH273B 20-Volt Cordless Rotary Hammer has long-lasting run time and great durability. for user comfort, this rotary hammer has SHOCKS Active Vibration Control. with protections against dust inhalation, vibration and loss of tool control, this tool delivers performance you demand and safety you need. Keep your 20-Volt tools running longer with the 20-Volt MAX Lithium-Ion Premium Battery Pack (DCB205). This battery is compatible with the complete line of 20-Volt MAX tools. This battery is backed by a 90-day money-back guarantee and 3-year free service contract for added peace of mind.