Bosch 0603977070 psr select 3 6v cordless screwdriver bosch diy 0603977070 p this screwdriver from bosch is an ideal companion for professional tradesmen and diyers looking for a high performance tool which is both easy and quick to use the screwdriver has been manufactured to a high standard and is equipped with a host of excellent features including the rotating bit cylinder that contains 12 screwdriver bits to change the bit simply rotate the cylinder until the required bit appears in