Stocking Stuffers for Men, 6-In-1 Keychain Screwdriver Bit with Flathead and Ph
Flat screwdriver: SL 4.5mm. Corresponding nut models M2.5 and M3.5 and M4 and M5. 🧰【WIDE VARIETY OF USES】The combination of 6 different functions endows this screwdriver with powerful capabilities.