What tool can I use to unscrew a screw with a square shape hole? I

Phillips Screwdriver; Torx Screwdriver; Hex Screwdriver or Hexagon Screwdriver; Robertson or Square Screwdriver; Pozidriv Screwdriver; Clutch Head or Bow Tie

square recessed, or combination head, causing further confusion about the terminology Cross A cross-recess screw drive has two slots

square slot cutter Square · Pozidriv · Terminal Block · Wrench Inch · Wrench Metric · Socket Inch · Socket 7 Piece Precision Slotted and Phillips Screwdriver Set Sale price

wolf cub slot Angle square · Angle square 45°, with stop · Angle square 45°, without stop Combination ring spanners · Combination ring spanner · Combination ring spanner