If you are looking for an extremely compact and light cordless screw gun, then the Bosch PS21-2A 12V Max 2-Speed Pocket Driver Kit might be just what you are looking for. The driver has the shortest head length in its class, measuring just 5.6 inches. It is ideal for working in tight corners and its 1.4 lbs weight means it can be used for long periods of time without fatigue setting in. The screwdriver has two operational speeds, forward and reverse modes, and speedy screw removal. It also has a built-in LED light for working in low light situations. The screwdriver requires a 12-volt Lithium-Ion battery, which is included along with the charger and 2 driver bits.