Precision & High Quality Bits Set SainSmart electric screwdriver comes with 45pcs bits, 1 screwdriver bit extension rod and 1 USB cable. All the bits are covered with antioxidant coating and pass the salt spray test, so they won't rust as easily as other brands screwdriver bits. Various types of bits help you get all sorts of tasks done. 90° - 180° Transformed Design & LED Light Adjustable Position Handle from 90° to 180° is good for wide or tight spaces. The built-in LED Light is useful, and helps you aim right at the screw tip in dark places. Easy to UseMagnetic self-locking design allows you to change the screwdriver bits quicker and the bits won't fall during working. The forward & reverse switch helps you freely fasten or loosen the screw easily. When the F/R control button stays in the middle place, the screw will not turn even when you press the button. Speed 250rpm MAX & 3N.m TorqueMAX speed up to 250rpm for daily fixing screws or wood drilling work. Unlike o