How to unscrew this square screw?

Slotters · Rotating Indexable Body for Slotting Cutters · Disc wShank Combination Square Protractor Heads · Combination Squares and Sets · Digital

It has a square center that keeps the bit centered, and wings the fit the slots so it doesn't can out It comes in two sizes Last edited: Feb 9

square slot combination screwdriver Phillips Screwdriver; Torx Screwdriver; Hex Screwdriver or Hexagon Screwdriver; Robertson or Square Screwdriver; Pozidriv Screwdriver; Clutch Head or Bow Tie

mpo188 slot screwdriver blade , a worm , an oil bottle formed in the hollow cavity within the main body , and a square slot in the head of the second pattern ramrod