How to unscrew this square screw?

TADMOS premium 171 screwdriver kit 5in1 Combination Screwdriver Set 48 Tip Type: Slot, Phillips Household Pack of: 9 FLIPKART'S CHOICE Shdav

Zinc Plated Machine Screw, Large Truss Head, Combined Square Slot Drive, M4, Type B Point metric

square slot combination screwdriver Screwdriver works on most combination head receptacle, switch and panel screws; Tip-Ident® color-coded handle end quickly identifies the screwdriver type

u9play slot game Insert the flathead tip into the slot and twist as you usually would with a square bit It should span the hole diagonally for the best pressure