General description Used to secure plasterboard to drywall and ceiling track systems with a maximum thickness of 0.6mm. These screws feature a Phillips No.2 recess for a positive drive and a bugle head to reduce the likelihood of damaging the board surface. The 25° super sharp point allows for ease of penetration, while the 60° twin-thread design offers excellent pull-out values and insertion. Technical specifications Size: 4.2 x 75mm Bit size: PH2 Colour: Black Finish: Passivated Box Quantity: 500 Thread: Partially threaded