Ceramic Plastic Adjusting Screwdriver 1.3Mm,1.8Mm,2.6Mm,2Mm | Stepper Dirvers Screwdriver Bit, 4 Sizes, Non-Conductive Slotted Screwdrivers. Slotted Screwdriver;. 4 x Screwdriver Bit (4 Sizes). The design of the rotating cover at the end of the handle,facilitates the positioning of precision screws and flexible transport.