Hammer Dewalt DCH172 The DCH172 is an SDS and Dewalt compact battery that can drill up to 16mm in masonry and 10mm in metal. Features include a brushless motor for extreme durability and reduced maintenance, plus 1.4J of impact energy, 0-4980 strokes per minute without 0-1060 ./min revolutions, making it an ideal tool for drilling boilers and holes in concrete , fixed in tiles and masonry from 4 mm to 16 mm. This model also features Perform & Protect, which ensures the lowest vibration in the class (8.8 m/s²) and protects the user from fatigue. Other equipment benefits include an 18V brushless motor for extreme uptime and reduced maintenance. 1.4J impact energy, 0-4980 blows per minute at 0-1060 rpm, ideal for drilling boilers and fixing holes in concrete, brick and masonry from 4mm to 16mm. 2 operating modes - drilling and hammer drilling. Perform & Protect: Vibration reduction technologies transferred to the user/operator. Bright white LED with delay function improves visibility.