Wowstick Magnetic Screwdriver Bit Screw Phillips Square Trox Hex
4mm (1/8") hex shank also most other precison screwdriver set. This is the original 1F screwdriver bit set with X1(20pcs), X2(20pcs) and X3(16pcs) model can be selected, Fit for XIAO series screwdrivers, screwdrives etc.