A 4-blade drill bit that leaves even and smooth hole edges and facilitates perpendicular drilling thanks to its special helix design. • The 4-blade design ensures fast and efficient drilling without chipping the edges of holes• helix geometry significantly speeds up drilling• suitable even for the toughest types of wood• made of hardened carbon steel (HRC 40-45)• hexagonal HEX chuck allows attachment to cordless screwdrivers, screwdrivers and impact wrenches• length: 165 mm