These ‘basic’ design Suki Pozidriv Zinc Plated Chipboard Screws feature a round pan head and have a countersunk Pozidriv recess They are designed specifically to use for particle boards, MDF and timber These are self-tapping screws, thus do not require any holes to be bored first Made of steel, these screws have a zinc passivation coating which increases the screw’s corrosion resistance properties