9524 Photovoltaic mounting tool set 17 piece tool set for installing photovoltaic systems. One 7442 adjustable torque screwdriver (pistol handle) for the measuring range 3. 0 6. 0 Nm. One 889 4 1 F Rapidaptor bitholder with fast rotating function for a particularly quick return movement without having to remove the tool during clockwise torque operation. One 6003 Joker ring spanner. 2 installation tools for MC4 solar connectors (Multi Contact). One socket 1 2" (with side wire cutout)