The MAK4 is a premium SDS Max drill bit with a dynamic 4 cutter head. It has a symmetrical head geometry with centering tip which helps to limit the effects of rebar collision, with shortened spiral windings and conical shaped dust tracks for extra fast material removal. The MAK4 significantly raises the performance parameters of drilling speed and life expectancy, considerably reducing the cost per hole. Ideal for concrete, stone, masonry, engineering brick, fixings & anchors. Features & Benefits • Premium SDS Max drill bit with a dynamic 4-cutter head • Symmetrical head geometry with centering tip • Shortened spiral windings and conical shaped dust tracks for extra fast material removal Specifications • Diameter: 18mm • Overall Length: 340mm • Working Length: 200mm • Shank: SDS Max • Pack Quantity: 1