A nailer ( 1 ) for nails ( 14 ) which are belted in the form of a coil ( 13 ) via at least one wire ( 15 ), with the heads ( 14′ ) of which partially overlapping each other, said device comprising an upper part ( 2 ), which is designed as hammer handle ( 4 ) at its one end ( 3 ) and has an angular stop ( 6 ) at its other end ( 5 ), and comprising a lever part ( 7 ), which is connected to the