The bosch professional 18 v twin kit comprises of the gsb 18 ve 2 li robust series combi gdr 18 v li impact driver with 2 x 18v 40 ah professional batteries supplied in an l boxx is the versatile professional twin kit for everyday tasksgsb 18 ve2 litorque max hardsoft 85 42 nmno load speed 1st gear 2nd gear 0 ndash 440 1850 rpmmax impact rate 27750 bpmchuck capacity minmax 1 5 13 mmdrill spindle thread 12 battery voltage 18 vweight incl battery 2 5 kgtorque