General Tools 500B Cordless Precision Screwdriver Replacement Bits The General Tools and Instruments 500B Cordless Precision Screwdriver Replacement Bits is a bit set for the 500 Cordless Power Precision Screwdriver Each bit is of the same quality as those that are packaged with the original screwdriver A cordless precision screwdriver is perfect for extremely small screws in sensitive environments like computer and other electronics hardware Always keep your screwdriver performing top notch with a replacement driver bit Each bit set includes six 1/8" precision bits