Universal use for 310/400ml cartridge or "sausage" caulks. No manual force needed thanks to high-torque mechanism. This allows fully concentrating on caulk application and work accuracy. Control allows setting the pushing speed up to 198 mm/min (no load), automatic switch-off in end position. 2.4 V DC power supply. NiMH 1.3Ah battery. Comes complete with 1 battery and 1 charger (1-hr).