7-piece tool set for installing photovoltaic systems. One adjustable torque screwdriver (pistol handle) 7442 for the measuring range 3.0-6.0 Nm. Digital torque value display. Reliable slip-over mechanism and audible signal when the set torque is reached. One 889/4/1 F Rapidaptor bitholding screwdriver 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. The special open end geometry expands the placement possibilities of the tool which makes the ring spanner particularly suitable for narrow spaces. 2 installation tools for MC4 solar connectors (Multi-Contact). One socket 1/2" (with side wire cutout) size 17 for installing panel connectors, one tool shaft (adapter 1/4" to 1/2") for manually operated socket wrench inserts.